Mother Great Horned Owl with nestling. Photo by Ramona Casault.
A pair of Great Horned Owls have nested on Ramona Casault’s acreage west of Calgary for several years. Ramona calls the adults Winnie and Waldo. There are three chicks this year, the last of which hatched just last week.
The female (Winnie). Photo by Ramona Casault.The male owl (Waldo). Photo by Ramona Casault.
According to Ramona, both parent owls have taken turns brooding the chicks, and now sometimes will both be outside the nest tree and leave the chicks for a while.
All three Owlets. There’s quite a size difference! Photo by Ramona Casault.Cuteness overload! Happy Mother’s Day!
Introducing Catherine Warwick – Cathy is a local birder who has been living in Calgary since 1997. She has been birding seriously for about fifteen years. She enjoys hiking, writing, and tavelling. Cathy has been writing an article about birds for the Lakeview News and Views newsletter for the past year or so. Birds Calgary will be featuring her new articles here monthly, and reposting some older ones too. Welcome aboard, Cathy!
A Merlin in our Midst
You may have seen a Merlin swoop past and thought – “That is one fast Robin.” This small but fierce falcon is a very fast flier, so fast it’s usually a blur. So you can be forgiven for mistaking it for a Robin that has gone to the gym regularly and lost its big red belly, as well as gaining some wing definition. What unmistakably identifies it as a Merlin, however, is the call it is making as it swoops around. They make a loud, “Klee-klee-kleeee” sound in flight that evokes the wilderness. This call is drawn out and falls in volume as it happens. In addition to the sound you can look for a smart-looking striped tail and sharp wings should it happen to land and give you an eyeful.
Juvenile Merlin. Photo by Dianne Stinson.
In Calgary I have seen them at the tops of trees, speeding around and calling out noisily. Sometimes they will have Magpies and Crows chasing them. This drama in the birding world is understandable when you find out that Merlins don’t build their own nest, they essentially take over the nest of a Magpie, Crow or another raptor. How lazy! No wonder the Crows and Magpies try to chase them away. Merlins have been known to lay their eggs right on top of a domed Magpie nest. The mother Magpie would be moving her brood in a hurry. Pack your bags kids, a killer has moved upstairs!
Merlin on nest in a spruce tree, Calgary. This looks like an old Magpie nest. Photo by Bob Lefebvre.
The Merlin is one of the smallest raptors in Alberta and is pretty darn cute. They must be terrifying to songbirds however, swooping in and picking off the slowest. Songbirds are its main source of food. Consider this: A Sparrow weighs about one ounce, as much as a pencil, thus a Merlin is estimated to eat about 900 a year. It’s a lot of work! They need all their energy for their fancy aerodynamics, and can’t waste it on such mundane things as building a nest. Most of their kills happen in the air, probably because they are such terrific fliers. It’s no wonder little birds seem nervous all the time, one minute you’re flying around and the next you are snatched up by a pint-sized raptor. Merlins eat pigeons too, which are basically the same size as them, talk about fierce!
Male Merlin. Males have a blue-gray back; females and young are brown. Photo by Dianne Stinson.
It’s possible the ones in Calgary will over winter here, city Merlins often stay instead of heading to South America like they are supposed to. Merlins just started to be city dwellers as recently as 1960, possibly at the same time as House Sparrows became plentiful. Merlins have a long history with people anyway, in medieval times they were trained as hunting falcons. They were called ‘Lady hawks’ because women favoured them. Is it because our puny lady arms would crumple under a big falcon? No, surely it’s because a Merlin’s charm is as large as they are small.
The best birding app out there is named after them in fact. If you ever want to identify a bird by sound just get the Merlin Bird ID app from Cornell Labs. It’s a miracle to hold up a phone to a singing bird and get an identification right away. It makes birding a lot easier.
Seeing a Merlin is the birding equivalent of a bolt of lightning, streaking around our residential streets.
In 1992, Peter Sherrington and Des Allen serendipitously discovered that large numbers of Golden Eagles and other raptors were migrating along a corridor on the front ranges of the Rocky Mountains in Kananaskis. Prior to this it was thought that not many Golden Eagles migrated. Peter and a group of volunteers began observing and recording the migrating birds. Over the next ten years they observed over 80,000 Golden Eagles (plus over 16,000 other raptors from 17 other species) passing through the corridor.
Observers at Hay Meadow, Kananaskis, Alberta. Photo by Caroline Lambert
The Rocky Mountain Eagle Research Foundation, a non-profit organization, was set up with the goal of increasing knowledge of Golden Eagle, Bald Eagle and other raptor migrations in Western Canada. For over thirty years the foundation has organized spring and fall migrant watches at three sites in the foothills.
The Hay Meadows site with Mount Lorette in the background. Photo by Caroline lambert
Caroline Lambert, one of the Principal Observers, is appealing for new volunteers to join the team of observers. Anyone can join the observers at the sites to help – it’s a very interesting place to visit and I encourage anyone with any interest to get in touch with the foundation and see where and when to go – but they also have a need to recruit more volunteers who can commit to observing for full days at regular times.
Golden Eagle, photographed by Caroline Lambert
Here is Caroline’s description of what is involved, and the rewards of taking part in this important project.
It’s a deep connection to nature like no other. Going to the same place regularly and staying there for a full day allows the birds and other animals to come to you, and over time you witness how the season changes, oh so gradually. That’s what it’s like at the semiannual eagle migration count in Kananaskis. A casual visitor, coming for a few hours at the peak of migration, will see just a snapshot of this. They might witness a few dozen eagles flying by, maybe a Red-tailed Hawk or Northern Goshawk, the usual chickadees, nuthatches, maybe the American Dipper. If they’re lucky, they might see some elk, or a moose, or deer grazing in the meadow. But the long-time observers have seen just about everything the area has to offer. Eighteen different species of raptor have been seen at the site, mostly eagles, but also Turkey Vultures, Ospreys, harriers, five different species of hawk, five species of falcons, and the three accipiters, with Northern Goshawk an almost daily occurrence. While cougar sightings have been admittedly very rare, most of us have seen all the other mammals in the area, including wolves and lynxes.
The eagle count at Kananaskis, run by the Rocky Mountain Eagle Research Foundation, has been running for over 30 years, and many of the older observers are no longer able to help out. We’re looking for dedicated people to help fill our ranks. We appreciate everyone who shows up with a pair of binoculars to help spot birds, but what we need most are people who will commit to a regular schedule, first as an Assistant Observer, and later as a Principal Observer. The Assistant Observer only needs to be able to spot birds and describe to the Principal where the birds are so the Principal can ID them, but the Principal Observer needs to be able to identify all the raptors that fly by. It takes some time to acquire the skills to do that – usually our Principal Observers start out as Assistant Observers and learn on the job, which is the best way to learn – out in the field, with an experienced person at your side. This isn’t for everyone as you need to be out at the site all day (mid-morning until sunset for assistants, sunrise to sunset for principals), constantly scanning the skies, and the weather can be a challenge, but for those who do this regularly, the rewards that keep us coming back and looking forward to the next season are there – the sighting of a wolf, or a Gyrfalcon, or one of those glorious days when hundreds of eagles fly by. We smile when the dipper comes by, almost every day, dipping as dippers do, and often singing. We marvel at the bluebirds, robins, and Varied Thrushes that show up in mid-March when it still seems too cold for them. It keeps us coming back season after season – not just for what we witness, but knowing that we are contributing to our knowledge of raptor demographics, especially eagles, as citizen scientists.
Even if you can’t help out, then donations to help compensate observers for expenses would be much appreciated.
The spring 2022 eagle migration count starts on March 1 and runs until April 22. Detailed information, including location and how to get there and how to donate, can be found on the website at eaglewatch.ca.
Hope you see you out there.
Caroline Lambert, Canmore
Bald Eagles at Hay Meadows, Kananaskis, Alberta. Bald Eagles are the second-most frequently observed raptors. Photo by Caroline LambertNorthern Goshawk at Hay Meadows, Kananaskis, Alberta. Photo by Caroline Lambert
Please check out the website – it’s full of fascinating observation records and a history of the counts. And even if you can’t get out to the sites yourself, you can support the project with a donation, or purchase a lifetime membership for just $20!
Snow Angel, Inglewood Golf Course, December 14, 2019. Photo by Kathleen Johnson.
During the recent Calgary Christmas Bird Count, we saw an amazing number of animal tracks in the fresh snow on the Inglewood Golf Course. But the most extraordinary tracks were these wing impressions (sometimes called snow angels) left by some of the local Bald Eagles as they skimmed low over the snow.
Photo by Kathleen Johnson.
In two places we saw a series of over twenty of these in a row, where an eagle had taken off from the ground or a low perch and flew across the open fairway, leaving an impression with every wingstroke, usually with impressions of the feet between the wing prints as well.
Some of the prints were over five feet across, despite the wings not being fully extended. Photo by Kathleen Johnson.Bob pointing to talon impressions. Photo by Kathleen Johnson.Photo by Bob LefebvrePhoto by Matthew Wallace
Short-eared Owls are scarce in the Calgary area in the winter, but sometimes a few can be found hunting meadow voles around fields that have not been cultivated for a few years. Ron Chiasson photographed these owls near Calgary this winter. Short-eared Owls are a sensitive species so we won’t give the location. They have declined in the Calgary area over the decades as native prairie has disappeared, but they have an almost worldwide distribution and their conservation status is “Least Concern.”
You can see more of Ron’s photos at Ron Chiasson Photography.
An immature Northern Goshawk has been hanging around Confederation Park this winter, feeding on Mallards that frequent the open water there. Ron Chiasson has photographed this bird in action. All photos taken at Confederation Park by Ron Chiasson.
Posted by Bob Lefebvre (I apologize that the blog was down for the last two days. It was a server problem – we aren’t going away!)
About a dozen years ago some people started using the term “superb owl” in advertising to avoid a similar copyrighted term, and since owls are indeed superb, birders have had a lot of fun with it on game day by posting their favourite photos of owls. Here are some local owls to liven up your day.
Snowy Owl, January 2018, east of Calgary. Photo by Ron Chiasson.
Snowy Owl, November 2017, east of Calgary. Photo by Ron Chiasson.
A well-camouflaged Great Gray Owl, November 2, 2017, Bow Valley Parkway. Photo by Michael Kim.
Great Horned Owl, December 19, 2017, High River area. Photo by Anne Elliott.
Northern Pygmy-Owl, January 28, 2018, west of Calgary.
Northern Pygmy-Owl, November 2017, Bebo Grove, Fish Creek Park. Photo by Ron Chiasson.
Northern Hawk-Owl, February 2017, west Calgary. Photo by Ron Chiasson.
This spring a family of Great Horned Owls nested in the Burnsmead area of Fish Creek Provincial Park. Max Ortiz Aguilar got these photos of the family after the young had hatched and were almost ready to start branching.
Great Horned Owls – mother with two downy young. Burnsmead, April 16, 2017.
Photo by Max Ortiz Aguilar.
Great Horned Owl, male standing guard by the nest, Burnsmead, April 16, 2017.
Photo by Max Ortiz Aguilar.
To see more of Max’s wildlife photos, go to his site, Photos by MOA.
