A Year in Review At MB091, Riverton Sandy Bar by Joanne Smith

Joanne Smith, our caretaker for MB091 Riverton Sandy Bar gives us an overview of comings and goings during another successful 2017 in the IBA. All photos unless stated otherwise were taken by and copyright to Joanne Smith. 

The year 2017 began as most years do at Important Bird And Biodiversity Area MB091 Riverton Sandy Bar. From January to March, ice fishing shacks dotted the ice on Lake Winnipeg, just south of the IBA’s Riverton Sandy Bar and Hecla Bar. This area is well known to both local and visiting recreational fishermen. 2017 also proved to be special because of local and visiting volunteers who came out to help pull invasive sweet clover with the goal of improving the habitat for possible future Piping Plover. With recent breeding success in other parts of the province, the possibility of having this nationally Endangered species return to Sandy Bar is quite real. The last record of nesting Piping Plover at Sandy Bar was in 2004.

From the arrival of Herring gulls in late March and first signs of nesting Canada Geese in early April, to the last fall migrants in late October, Sandy Bar can definitively be a hot spot for many species of birds ranging from the more common Mallard to the endangered Red Knot rufa subspecies. Fishermen, birders, volunteers and the birds all flock to Sandy Bar!

By the third week of April Herring Gulls had already begun to settle in and prepare nests. Approximately 65 gulls and 18 nests (without eggs) could be seen at the far end of Sandy Bar. American White Pelicans and Double Crested Cormorants had also made their arrival at this point.

Along with the arrival of new species, massive chunks of ice littered the shoreline as a wind/ rain/snow storm had battered the area in mid-April. Willows were bent over along the shoreline and the old wooden building which is used by nesting Barn Swallows (COSEWIC Threatened) received damage to many of its boards. The destruction left by the storm was a sharp contrast to the tranquility of seeing three Common Loons diving on the calm Lake Winnipeg waters just north of Sandy Bar. Hawk species Northern Harrier and Bald Eagle as well as the migrating song bird American Tree Sparrow were also regulars at this point. The huge Bald Eagle nest just west of the IBA boundary had already been occupied for several weeks at this point.

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April images, clockwise from top: Sandy Bar; occupied Bald eagle nest; Herring Gulls checking out nest sites

By early May other waterfowl species such as American Wigeon, Northern Pintail, Lesser Scaup and Gadwall were visiting the waters off Sandy Bar. Migrants Yellow-rumped and Palm Warblers could be seen along the shoreline and the Song Sparrows had already begun to check out the vegetation on the edge of the marsh that would make ideal spots to nest. One lone Snow Bunting lingered further out on the sand bar and one Barn Swallow had arrived to check out the building that would serve as home to its young in the coming weeks. At this point, a few shorebirds and marsh birds had also made an appearance. Two Marbled Godwits and one Sora (local breeder) were seen by mid-May. Towards the end of May sightings of migrating Sanderlings, Ruddy Turnstone, Whimbrel and Red Knot were also added to the shorebird visitor list.

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May images, clockwise from top left: Marbled godwit and Whimbrels; Herring Gull nest; Red Knot and Ruddy Turnstone; Canada Goose Family

The month of June included a few more shorebird species including Dunlin (seen by Jock McCracken), Semipalmated Sandpipers, Semipalmated Plover, Black-bellied Plover, White- rumped Sandpiper and local breeding species Killdeer and Spotted Sandpiper. By June 8th one Killdeer pair had already chosen an area of the shoreline to nest on. Unfortunately they had chosen an area close to human foot and ATV traffic and it didn’t appear in later weeks as if they had been successful in this particular spot. But then again, much goes on that our human eyes never see. June was definitely a successful month for Canada Geese. Numerous families could be seen on the lake consisting of little fluffy goslings bouncing on the waves between protective parents. A view of Hecla Bar with binoculars showed American White-Pelican and Double-crested Cormorants taking it easy on the distant sand bar.

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June images, clockwise from top left: Killdeer on nest; Western Grebe; Red-winged Blackbird staking out territory at Marsh; Herring Gulls And American White Pelican

In July, 75 Herring Gull adults could be seen at the far end of Sandy Bar with at least 5 juveniles. Close to 300 Franklin’s Gulls were sunning themselves on the shoreline some distance from the Herring Gulls. Marsh Wrens were numerous along the road that winds through the marsh area of the IBA. Even though we humans think of July as a summer month, some shorebirds had already begun their fall migration south. By July 10th, two Greater Yellowlegs made a stop at Sandy Bar before continuing their journey south.

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July images, clockwise from top left: looking out towards the tip of the bar; vegetation at the tip; Franklin’s Gulls, Ring-billed Gulls and Herring Gulls

By the first week of August more shorebirds were using Sandy Bar as a refueling station before continuing their fall migration. Many shorebird species nest in northern Canada and the Arctic and then fly back to South America for the winter months. Baird’s Sandpiper, Least Sandpiper, Semipalmated Sandpipers, Black-bellied Plovers, Ruddy Turnstone, one lone Sanderling and one Red Knot had made appearances in early August.

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Early August images. Clockwise from top left: Marsh Wren; Zebra Mussels; Baird’s Sandpiper; Blue-green algae

On August 17th, thirty-six volunteers from the Riverton, Interlake and Winnipeg areas, came together to pull weeds at Sandy Bar. Riverton resident, Thor Johannson was instrumental in recruiting local volunteers and both the East Interlake Conservation District and Manitoba Sustainable Development were on board to pull weeds. After a brief introduction and coffee and donuts, volunteers headed out onto the sand bar to begin the weed pull. The day started with a pleasant 16 degrees but soon rose to 26. Despite the heat, volunteers sweated their way to filling sixty-six bags of weeds! Not too shabby! Along with the humans, there were three additional shorebird species using the sand bar as a stopover refueling station. Lesser Yellowlegs, Pectoral Sandpiper and the super long distance migrant American Golden Plover (can fly up to 20,000 miles per year, including a nonstop flight of over 3000 miles over the Atlantic Ocean) put in an appearance. An extra bonus was when Linda Curtis spotted and photographed two Trumpeter Swans just north of the Sandy Bar marsh area.

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Weed pickers at work (top); the weed team, photo by Dries Desender (bottom)

Late August provided sightings of five Buff-breasted Sandpipers and four Red Knots. Buff- breasted Sandpipers are sometimes seen during migration in plowed fields or the sod farms near Oak Hammock Marsh. Having them show up at IBA Riverton Sandy Bar was an extra special bonus. A week later, both species were seen by a group of nine individuals. For some, this was the first time seeing them in 2017 and for a few others, they were lifers (a birder’s term used when they see a species for the very first time).

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Late August images. Clockwise from top left: Black-Bellied Plover; Canada Darner (thanks to Deanna Dodgson for the id); Buff-breasted Sandpiper; Red Knots

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Late August images. Clockwise from top left: Red Knot; zebra mussel necklace; Herring, Ring-billed Gulls, Caspian, Common, Forster’s terns, Black-bellied Plovers, 2 hard to find Red Knots in far back; Sandpipers in camouflage (guess the numbers and species)

By September 8th, real signs of the upcoming fall season were noticed at Sandy Bar as Horned Lark and Lapland Longspur dropped by to refuel. On September 14th two American Black Ducks were noticed by Bonnie Chartier. American Pipits also put in an appearance. Earlier that day, Ryan and Irene Porteous were fortunate enough to see twenty-five White-winged Scoters on the lake. Another sure sign of the changing seasons.

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September highlights, clockwise from top left: Sanderlings; Horned Lark; American Bittern; Lapland Longspur

Late summer also brought its regular waves of algae rolling onto shore. While it can look rather interesting, it’s probably not a good sign for Lake Winnipeg. Zebra mussels are now so common on the shoreline at Sandy Bar that one almost forgets to mention them.

On September 29th, another weed pull was carried out by volunteers. Thirty-five volunteers spent the morning pulling fifty bags of invasive sweet clover including a good number of people from the Riverton Friendship Centre. Riverton High School Science teacher Don Bodnarus brought his grade 9/10 class out to experience the event as part of their science and outdoor education program. And dare we use the word “snow” in the month of September, but one lone Snow Bunting was seen amongst the sixty-five Lapland Longspurs. A nice sighting of two more American Golden Plover and numerous Snow Geese also added to this successful event.

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Final weed pull, clockwise from top left: Great-Horned Owl; American Golden Plover; Sept 29 weed pullers

Earlier in September, John Weier spotted a Peregrine Falcon flying past the tip of Sandy Bar and by mid-October, the northern shore of the IBA was occupied by hundreds of migrating Canada and Cackling Geese. Later that month, Common Redpolls were also added to the 2017 fall bird list at Sandy Bar. Another sign that fall had definitely arrived.

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Flavours of fall, clockwise from top: Yellow-rumped Warbler; invasive Asian lady beetles; Snow Geese

The final chapter in the 2017 weed pulling weedathons was completed as Sustainable Development made their way out to Sandy Bar in October to burn the 100+ bags of invasive sweet clover.

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Final fall images, clockwise from top left: burnt weed bags; Snow Bunting; weeds gone up in smoke; Common Redpoll

The lake levels were lower in 2017 than the previous 4 years since IBA Riverton Sandy Bar monitoring had begun. Despite this, one cannot help but think that it was the combined effort of many volunteers who cleared the area of weeds along with the lower lake levels that made Sandy Bar more appealing as a stopover for important migrating shorebirds such as the Buff- breasted Sandpiper and the endangered Red Knot.  With more weed pulling events and continued lower lake levels, maybe we’ll eventually see another pair of nationally Endangered Piping Plover stake out Riverton Sandy Bar as their place to successfully raise young.

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Fall shorebird migration on the sandbar was the most successful in terms of species richness in a number of years – maybe a sign of early weeding success? Clockwise from top: Sanderlings and two Dunlin in flight, the sandy bar, more Sanderlins and Dunlin

Many thanks to all weed pullers, weed burners, bird monitors, Rona in Gimli for a donation of bags and gloves, those who made eBird entries and all who simply showed an interest in learning more about Important Bird And Biodiversity Area MB091 Riverton Sandy Bar.

May 2018 be as productive as 2017!

MB091 Riverton Sandy Bar

Top: Fishing Ice shacks Bottom: Sunrise taken morning of weed pull Sept 29

Footnote: 2017 has been a wonderful year in the life of Riverton Sandy Bar, no doubt almost 100% due to one person. Joanne has been a fabulous caretaker and a real asset to the program. Thanks Joanne!

Happy Holidays From the Manitoba IBA Program

Seasons Greetings From the Manitoba IBA Program

Thank you to everyone who has counted birds, pulled weeds, led public bird walks, been an advocate for globally important habitats for biodiversity and the many other critical activities which make this program what it is. 2017 has been a fantastic year for the Manitoba IBA Program and we would be nothing without our brilliant volunteers.

A few notable highlights from 2017 included:

Have a wonderful holiday season and see you in 2018!

Netley-Libau Goose Count and Marsh Day Tour on the Red River

Geese are some of the most recognisable and numerous birds found in IBAs across Canada. Perusing the on the IBA Canada website, you will notice that geese are significant trigger species for a number of Manitoba’s IBAs – I make it 12, so around one third. It is likely that the Canada Goose makes an appearance in every one of Manitoba’s IBAs each year, with the possible exception of one or two of the rockiest and more remote islands on Lake Winnipeg.

Given all of the above, one may come to the conclusion that counting geese is not important. In fact, we could argue that there is little purpose to giving geese any attention. BUT these large concentrations of geese are among the highest concentrations in North America. Geese are also likely to be a good indicator of some wider environmental issues (pollution, wetland loss, habitat changes and overexploitation for example – ok little chance on the last one right now). Collecting accurate information on goose concentrations in our IBAs not only contributes to our long-term understanding of their populations but also helps us to identify issues within individual IBAs.

It is with this in mind that 6 people gathered at 4 different points around the Netley-Libau Marsh IBA in October to count the geese as they left their roost in the morning. The Netley-Libau Marsh was historically considered to be one of the most important resting areas for migratory geese, primarily Canada and Snow, in the central flyway. In recent years attention has shifted understandably to the showstopper scenes at Oak Hammock Marsh and it appeared to be a good time to see what was happening at Netley-Libau.

This was very much a trial – but we hope to expand this principal to other IBAs in future years. The objective was simple: to test the methodology at Netley-Libau and identify ways to improve the approach for future years. These experiences will hopefully be transferred to counting other sites in 2018.

Netley-Libau Marsh is the largest inland coastal marsh in North America. The flow of the Red River through the centre and into Lake Winnipeg effectively splits the marsh into two distinct areas: Netley Marsh and; Libau Marsh.

Such a large area is hard to cover with few people – we had three groups on the Netley side and one on the Libau side.

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A glorious morning with calm bright conditions made it perfect for waterfowl counting. Eric Smith and Louise Buelow-Smith counted the geese as they headed northwest over Chalet Beach. They counted 1,100 Canada Geese in total.

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A beautiful sunrise over Netley Marsh. Copyright Tim Poole

A few miles south of Eric and Louise, Tim Poole stood at the end of Henry Road. This area had the largest counts of the morning with Snow Geese, Cackling Geese and Canada Geese present. This is one of the few spots with good views of the water. However, views were  impeded by trees and bushes. Total counts included 1,115 Snow Geese, 289 Cackling Geese, 2758 Canada Geese and 1,565 Ring-billed Gulls.

A third group, Pat and Dave Wally took up a location south of the marsh and west of the Red River. They saw fewer birds leaving from here, perhaps as they were further from grain fields. This was a good future lesson: position your volunteers in areas between the marsh and good feeding. They did however see 1,240 Canada Geese, 540 leaving the marsh and a further 700 in fields as they left the area. This is interesting as it suggests that a combination of standing observation followed by checking a few blind spots afterwards might be important.

Due to a lack of volunteers, we were unable to check the Libau side as thoroughly as we would like. We did however have high hopes that there might be good numbers of geese. The actual marsh here is more functional than the Netley side, and Christian Artuso had counted 1,975 Canada and 4,128 Snow Goose on the northeastern corner the previous weekend. Surely it would turn up something good! John Hays turned up full of hope and was left standing almost alone – only 26 Canada Geese flew over for company – bizarre! Still, there were several hundred Canada Geese by Patricia Beach later in the morning. What would have caused such a large fall from Sunday to Thursday? Maybe a change in the wind direction? Maybe a shift in foraging area from east to west? Maybe the geese migrated? Whatever it was, it goes to demonstrate how dynamic migration can be.

Before moving on, another lesson learned was that it probably doesn’t pay to be too close to the action as birds leave a marsh. A panoramic view across grain fields on the west side of the IBA will probably in all likelihood provide a wider field of vision than a closeup but restricted view. The grid system of roads in this area might lend itself to positioning a counter at every second mile road giving a very large view across the area. Here is a possible ideal scenario monitoring map for future years. Preferably with 2 volunteers at each point – a caller and a counter – but if necessary with a single monitor.

Netley-Libau October 2017 monitoring locations - future


Louise had found out that the Red River Basin Commission were going to lead boat trips to Netley-Libau Marsh, an area which has become degraded over decades. Louise, Eric, Pat, Dave and Tim attended following the goose count. The event was led by Dr Gord Goldsborough, Associate Professor in the Department of Biology at the University of Manitoba, Dr Richard Grosshans from the International Institute of Sustainable Development,  and Steve Strang, Manitoba Director for the Red River Basin Commission. This was a fascinating opportunity to see the state of the marsh and hear firsthand from about the various influences which have led to the current state of the marsh.

From the boats – a flotilla of local boat owners had been hired for to take us out – our first point of call was the Netley cut. This is a small cut which was created in the 1920’s to allow access from the river to Big Netley Lake. Unfortunately a narrow cut has grown to become a very wide opening effectively flooding the marsh at this point with river water. A cursory glance (past the pelicans and gulls on the sandbar) demonstrated the issues succinctly: a lack of emergent vegetation (e.g. cattails, phragmites, bulrushes and sedges) and some very choppy water.

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A view of the Netley Cut. Note how open it is, Copyright Tim Poole

Continuing north we learned that the issues affecting the marsh were complicated: Lake Winnipeg Regulation creating elevated water levels and preventing drawdown; the cut; nutrient load; weather and climate impacts and; isotonic rebound (glacial melt in the north is causing the lake to ’tilt’ towards the south). These issues add up to a marsh which is deteriorating and at risk of losing the functionality which makes marshes so important for communities and wildlife. Wetlands after all provide us with a high number of ecosystem services. Loss of these functions in an already struggling watershed will impact on everyone and everything in the area. For example, consider the issues with phosphorous loading in Lake Winnipeg. Functioning wetlands act like kidneys, absorbing these excess nutrients before they reach Lake Winnipeg.  Netley-Libau should be part of the solution to the many issues in this area – but only if it the marsh regenerates.

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It was pretty cold out on the boat! Copyright Tim Poole

We finally ended up at the north end of the marsh near where the river opens into Lake Winnipeg. We were told about the historic use of dredging to keep the channels open for boats (there are 3 channels entering Lake Winnipeg). Dredging is controversial when used in some locations, and it is certainly not our intention here to get into a debate about the good, the bad and the ugly of this management. However, we are also facing a critical situation in this watershed. Silt is building up in the channels, some natural but much due to human-induced erosion.

The plan here is dredge, remove the silt from the channels and try to create artificial reefs in the marsh on which emergent vegetation can begin to grow. If this could be made to work then the marsh might begin to regenerate in places. It certainly would not deal with all the issues at Netley-Libau but it might begin to mitigate for some of the impacts. This idea is certainly creative and worth exploring – something needs to happen in this marsh before it is too late. So best of luck to everyone involved!

For more information on this please take a look at the Red River Basin Commission website.

Finally, the following is the Red River Basin Commission conclusions from the day:

  • The Netley-Libau Marsh is in danger: vegetation is being lost and the riverbanks are being eroded: the marsh is disappearing
  • The wetlands act as the kidneys of the lake: they have the capacity to absorb nutrients and harmful toxins in water before it enters Lake Winnipeg, hence reducing the toxic algae blooms
  • Wetlands are also capable of sequestering carbon and providing important habitat for wildlife and fish
  • Since dredging ending in 1999,the bottle-neck caused by siltation at the mouth of the Red River has been consistently contributing to flooding of the marsh
  • The time to act is NOW!

 

Updates to the IBA Canada Tables

There has been a recent upload from eBird to the IBA Canada website. In turn, there have been a number of Manitoba IBAs which now have updated in their respective tables. Below are links to the relevant tables. If the writing is in bold, it means that a species trigger has been met (usually either 1% of a global, continental or national (for COSEWIC species) breeding population). If the writing is not in bold type, it means that the total number of birds listed is 75% below the trigger.

If you notice any other changes from 2016 and 2017 which are not highlighted below, please let us know.

MB001 – Delta Marsh IBA,  Semipalmated Plover, Rusty Blackbird

MB003 – Churchill & Vicinity IBA, Little Gull, Rusty Blackbird

MB010 – Oak Hammock Marsh, Buff-breasted Sandpiper, Rusty Blackbird

  • One of the 2016 Rusty Blackbird triggers came from our fall blitz.
  • Buff-breasted Sandpiper was from summer 2017 from an eBird user.

MB015 – Whitewater Lake, American White Pelican, Pectoral Sandpiper, Long-billed Dowitcher, Short-billed Dowitcher, Western Grebe, Tundra Swan, Franklin’s Gull

  • American White Pelican, Pectoral Sandpiper, Short-billed Dowitcher and Western Grebe were all triggered in our August 2016 blitz.
  • Franklin’s Gull received a trigger in our May 2017 blitz.
  • Short-billed Dowitcher and Western Grebe were triggered in our early August 2017 blitz
  • Long-billed Dowitcher and Western Grebe were triggered in our late August 2017 blitz.
  • A total of 2,500 Pectoral Sandpipers has appeared from fall 2014, recorded by Christian Artuso and the late Liis Veelma, indicating that the new boundaries have now been uploaded by Cornell. Thanks to Andrew Couturier and his team at BSC for facilitating this process.

MB024 – Southwestern Manitoba Mixed-grass Prairie, Loggerhead Shrike, Spargue’s Pipit, Chestnut-collared Longspur

MB038 – North, West and East Shoal Lake, American White Pelican

  • The above total shows the IBA Protocol on eBird in action, being a total of 3 different checklists from a single day within the IBA. These were recorded by Christian Artuso and Josiah Van Egmond (checklist 1, checklist 2, checklist 3).

MB055 – Saskatchewan River Delta, Tundra Swan

MB091 – Riverton Sandy Bar, Rusty Blackbird

MB100 – Kinosota-Leifur, Red-headed Woodpecker

  • The above trigger does not include the total for the IBA blitz in July 2017. This will be updated in the next upload.

We do know of some significant totals at Oak Lake and Plum Lakes IBA which will be added in the next data upload in the table (a certain gathering of cranes and some large totals of Tundra Swans).

Thank you to the many people contributing this critical information on eBird. There is a strong possibility that one day your totals might end up on these tables. If you have any high numbers of birds from IBAs, historic or recent, and they are not entered on eBird, then please don’t hesitate to contact us at iba@naturemanitoba.ca. We would be delighted to enter your bird monitoring information on your behalf!

 

SACRe bleu! Incredible Crane Numbers at Oak Lake and Plum Lakes IBA

Tim Poole describes an incredible spectacle in the stubble fields west of Oak Lake last Friday.

Last Friday (October 27 2017), Christian Artuso and I were driving from Canupawakpa Dakota Nation on the long drive back to Winnipeg when to our collective astonishment, we came across a field full of cranes. Yes, quite literally a field!

Seeing large numbers of Sandhill Cranes is not a complete surprise – after all, the previous Saturday, Glennis Lewis and Linda Boys had encountered 1200 Sandhill Cranes on the west side of Oak Lake. I had also counted 800 on the roads north and west of Canupawakpa an hour earlier.

Initially the numbers of cranes did not appear to be anything special. As we crossed the Bellview Road on 42N our eyes were drawn to a flock of Canada and Cackling Geese with some cranes standing around in the foreground. Christian, offered me the choice of geese or cranes to count. I opted for the geese – the best decision I made all day! As Christian lifted his binoculars to begin counting what he suspected would be a few hundred birds, it suddenly dawned on him that this would not be so simple. For in the background stood a multitude of cranes.

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Sandhill Cranes everywhere, truly an astonishing spectacle. Copyright Christian Artuso

It was the densities of cranes which took us aback. Even an experienced bird surveyor as Christian was completely gobsmacked by the scene infront. Just row upon row upon row of cranes.

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A stitching together of the Sandhill Cranes. Copyright Christian Artuso

Christian began counting, initially he ticked off groups where he could – 21 groups of 20, followed by 11 groups of 20, then followed by 31.5 groups of 100. At this point things got tricky as the lay of the land impeded our view. Driving to the east end of the section, we turned south and were greeted by the entire flock. Having counted up to a certain point before, Christian was able to continue. Next up 26.5 groups of 100 cranes, another 250 and then 320 mooching around in the foreground. While this was going on, I counted the flocks of birds flying in – 2, 18, 12, 66, 37, 3, 13 and more. Later that day I tallied everything and came to a figure of 7,363 Sandhill Cranes (and not a single Whooping being the sole disappointment).

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A close-up of the flock. Copyright Christian Artuso

My previous highest total of cranes was around 1000 spotted south of here in the Maple Lake area in late September 2016. There were also large concentrations of cranes in the Big Grass Marsh area in the 1960’s. Christian suspected that these might be Lesser Sandhill Cranes. If they were, then these cranes would breed in the Arctic tundra rather than the boreal – those birds presumably pass through earlier in the fall. Lesser Sandhill Cranes are smaller than the boreal breeding intermediate birds (the Greater Sandhill Crane, the larger variant breeds in the northern US). In any case, it was not possible to distinguish the difference given it is solely a question of size.

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Additional cranes joining the flock were counted as they came in. Copyright Christian Artuso

We tried to drive forwards at this point but the first few birds began to flush and we were not keen for these birds to waste energy in sub-zero conditions mid migration. Flushing any bird, even by accident, costs energy which is better conserved for migration. We drove back around and found our way to the south side of the mile section. Christian tried another count which only went to confirm his first total give or take a few! Interestingly, some younger birds were dancing in the foreground – these birds do after all mate for life.

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The cranes on the right of centre in this photo were dancing. Copyright Christian Artuso

Cranes do not forage in water, although they roost in shallow water and certainly breed in open wetlands surrounded by trees and shrubs. In migration these flocks will feed in grasslands and stubble fields, looking for spilt grains, invertebrates and small vertebrates.

Here is a video trying to show the extent of the flock (with sounds effects in the background from Christian).

Departing south and then cutting west, we could still hear the magnificent rattle call from at least 2 miles away. Something had at this point disturbed the cranes and they were now flying off in all directions like a huge swarm of mosquitos or even locusts on the prairie.

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Swarms of cranes. Copyright Christian Artuso

Now we switched our attention to our second big species of the day, the Tundra Swan. Along the southside of Plum Lakes up as far as the Grande Clariere Road we managed to count 863, another brilliant total (we had over 1000 north of here the previous day, but that’s for another blog). There were also other neat birds including 1202 Snow Goose, a single Ross’s Goose, 40 Rusty Blackbirds (globally Vulnerable) and several hundred ducks – but it was the swans which again were the highlight.

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Auditioning for Loony Tunes on ice? Copyright Christian Artuso

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That’s better! Must be dancing on ice. Copyright Christian Artuso

It is clear that Oak Lake remains one of Manitoba’s foremost staging areas for migrating waterfowl and other birds. The total for Sandhill Cranes easily triggers the 1% threshold for a globally significant concentration of this species and although our totals fell short in 2017, it is obvious that Tundra Swan concentrations do likewise. Targeting large seasonal concentrations of birds will be a project priority in 2018.

Here is our eBird checklist for the day.

The cranes remained in the area on Saturday. Ken Stewart, a member of the Manitoba Birds Yahoo Group took a trip down and found them once again – see video below. We can make a couple of observations here. First, the temperature is clearly warmer. Second, there appear to be even more cranes! Christian will try to count from the video – we will try to update the blog if he manages to. We are not sure why the birds suddenly flush – possibly a raptor or a large carnivore showed some interest but this is incredible to watch!

Ken has kindly agreed to let us use his video which is copyright Ken Stewart.

Sandhill Crane

You can also see more of Ken’s excellent photos on his Flikr page – https://www.flickr.com/photos/kritterspotter/with/37330706744/

Finally, it would be remiss not to mention that what we saw on Friday was just a small, but significant part of the overall Sandhill Crane population. To see something utterly astounding then you really should head to Nebraska, where over 500,000 Sandhill Cranes stage during spring migration.


Erratum – Thanks to Donna Danyluk for pointing out that Sandhill Cranes in the Platte River Valley stage en masse during spring migration – not overwinter as originally printed. See also the Rowe Sanctuary website.

Tundra Swan Counts in the Oak Lake and Plum Lakes IBA

Keeping up on events around Manitoba has been a challenge. We still need to update on our goose count at Netley-Libau Marsh and catch up on a few other volunteer based activities. For today, it is to Oak Lake and Plum Lakes IBA and a recent visit with volunteer Glennis Lewis.

Glennis is certainly very knowledgable about some of the unique biodiversity of the sandhills and other habitats around Oak Lake and Plum Lakes IBA. Having worked in the IBA (before it was an IBA) as a student (close to the former large Franklin’s Gull colony) or completing a contract looking for western spiderwort, Glennis has spent many days in the Oak Lake area and knows it very well.

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A panoramic view from the weir near Oak Lake Resort. Copyright Tim Poole

On Wednesday October 11th, Glennis and Manitoba IBA Coordinator met up early morning in Brandon and travelled the 45 minutes down the road to Oak Lake. The primary objective was to take a look at a few areas of the IBA which Tim had not visited previously and maybe also get a count of any large concentrations of fall migrants.

The northern area of the IBA is covered by pasture, hay meadows and the dominant feature, the Assiniboine River Valley. Within this area is part of the Upper Assiniboine Wildlife Management Area. An old wetland project is also to be found in this area – but alas there were few waterfowl to be found here on a warm Wednesday morning in October. The groups of Eastern Bluebird were worth the trip at least.

Location of DU Project

The highlight of the day were the large concentrations of waterfowl, especially Tundra Swan. These northern breeders can be abundant in large concentrations during passage in some of Manitoba’s IBAs (see Saskatchewan River DeltaWhitewater and Churchill and Vicinity). From the southwest corner of Plum Lakes to the wetlands just to the north of Oak Lake we were able to count a minimum of 1765 Tundra Swans, just 135 short of the 1% North American breeding population. See below for a map of where the larger concentrations were encountered.

TUSW locations

These large concentrations suggest that some concerted, targeted counts during fall by a group of volunteers should be able to identify significant concentrations of migratory waterfowl in the Oak Lake and Plum Lakes IBA boundary.

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An example of several hundred Tundra Swans at Oak Lake near the weir. Copyright Tim Poole

There were also thousands of Snow Geese in the area, their presence made public thanks to a passing Bald Eagle. Snow Geese tend to be more abundant in southwestern Manitoba at this time – a count of 22,000 was made by Colin Blyth and Gillian Richards on October 22nd at Whitewater Lake. In addition thousands of ducks were feeding along the weir, too many to stop and count at times. Anyway below are a couple of (not the best) videos just to demonstrate the sheer scale of Snow Geese encountered.

In terms of shorebirds, there were still a few around – and Plum Lakes remains in a state of drawdown. Long-billed Dowitcher and both species of yellowlegs were most abundant, with a single Black-bellied Plover flying overhead adding a bit of diversity. Raptors were also present in low numbers including a glimpse of a Northern Goshawk in forest on the Grande Clariere Road and a lovely view of a Great Horned Owl.

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Red-tailed Hawks were among the raptors encountered. Copyright Linda Boys

10 days later and this time Glennis was joined by Linda Boys another one of our IBA volunteers based out of Minnedosa. A focused Tundra Swan count was the aim of the day this time, avoiding the north which lacks good waterfowl habitat. In the intervening period it was apparent that although the numbers of waterfowl were still very high, there had been a certain amount of drop-off from the 11th. A very good total of 1133 Tundra Swans were present in the same areas, a drop of 600 from the high count. No trigger, but at least we now know that with some planning it would be possible to do target counts of swans and other waterfowl during fall.

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Gorgeous Tundra Swans feeding in the shallow waters around Oak Lake. Copyright Linda Boys

Another major highlight of this trip was a surprisingly large concentration of Sandhill Cranes (for this late in the fall that is). These cranes were all concentrated in a single field in the west of the IBA. Sandhill Cranes are certainly a species to look out for in large concentrations in IBAs with open hay meadows and pastures. In 2016 around 2000 were counted in early October in fields in the Southwestern Manitoba Mixed-grass Prairie IBA and the adjacent Maple Lakes area and the Langruth-RM of Lakeview IBA has historically been a critical staging area for this species. Another species to look out and get more people reporting!

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Another stunner from Linda, this time a small snapshot of the huge numbers of Sandhill Cranes present in the western part of the IBA. Copyright Linda Boys

Other late season birds included Turkey Vulture:

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Not strictly taken on the 21st but Linda had previously sent us this stunning image of a Turkey Vulture, well worth sharing. Copyright Linda Boys

The combined bird lists of these trips is outlined below. Thanks Glennis and Linda for your time!

October 11th October 21st
Snow Goose 5941 913
Canada Goose 81 105
Tundra Swan 1765 1133
Blue-winged Teal 18 3
Northern Shoveler 80 1
Gadwall 485 1
American Wigeon 8 0
Mallard 417 203
Northern Pintail 14 0
Green-winged Teal 10 2
Canvasback 598 2
Redhead 79 1
Ring-necked Duck 50 1
Lesser Scaup 65 0
Greater/Lesser Scaup 20 0
Bufflehead 66 21
Common Goldeneye 15 0
Hooded Merganser 3 0
Ruddy Duck 1 2
duck sp. 1000 0
Pied-billed Grebe 3 0
Double-crested Cormorant 0 2
American White Pelican 0 1
Great Blue Heron 2 1
Turkey Vulture 1 0
Northern Harrier 5 3
Northern Goshawk 1 0
Accipiter sp. 1 0
Bald Eagle 2 4
Red-tailed Hawk 5 0
American Coot 562 5
Sandhill Crane 24 1200
Black-bellied Plover 1 0
Long-billed Dowitcher 56 0
Wilson’s Snipe 1 0
Greater Yellowlegs 24 0
Lesser Yellowlegs 40 2
Greater/Lesser Yellowlegs 23 0
Ring-billed Gull 20 1
gull sp. 50 0
Rock Pigeon (Feral Pigeon) 2 8
Mourning Dove 1 0
Short-eared Owl 0 1
Great Horned Owl 1 0
Hairy Woodpecker 1 0
American Kestrel 1 0
Blue Jay 2 0
Black-billed Magpie 22 3
American Crow 3 2
Common Raven 10 2
Horned Lark 1 0
Black-capped Chickadee 1 0
Eastern Bluebird 86 0
American Robin 21 7
European Starling 12 0
Lapland Longspur 200 0
American Tree Sparrow 4 28
Dark-eyed Junco 8 18
Harris’s Sparrow 1 2
Vesper Sparrow 1 0
Savannah Sparrow 5 0
Song Sparrow 1 0
sparrow sp. 20 0
Western Meadowlark 6 0
Red-winged Blackbird 9 200
Rusty Blackbird 24 0