Rob English caught these two Bald Eagles, an immature and an adult, having a dispute over a perch.
Tag Archive | calgary birds
Leucistic Rough-legged Hawk
Posted by Matthew Sim
We’ve done posts here on this blog about leucism before, which is when a bird has reduced pigmentation, meaning it has more white in it’s feathers than normal for the species. We’ve had some examples before, including a leucistic House Finch, American Robin, Ruby-throated Hummingbird and others. For the past few months, Calgary has had a very neat leucistic bird in the area. This Rough-legged Hawk frequents the area around Highway 40, just west of Calgary.
Now compare this with a more normal Rough-legged Hawk.
On January 1rst, I found this leucistic hawk on Highway 40 near its intersection with Range Road 40.
Wednesday Wings: Song Sparrow
This Song Sparrow has been overwintering in Votier’s Flats, Fish Creek Park. It spends quite a bit of time feeding in the open water of the creek. Photos by Bob Lefebvre.
The creek at Votier’s Flats.
Impressionism
Posted by Matthew Sim
It was a bright, sunny winter afternoon in Calgary, nearly two years ago to the day. I had just retreated from a chilly walk around my neighborhood and was warming up when I happened to glance out the upstairs window. Upon doing so, I noticed a strange shape down on the snow. It took me a minute to figure it out, but once I realized what I was looking at, the story began to come together piece by piece. See what you come up with.
When you looked at this shot, you might have said that you see a bird’s impression in the snow. You would have been right. Now, you might have been a little more specific and described seeing a raptor’s impression. If you got this far, you did great. It’s not very easy to deduce much else. However, some may have gone even further, observing the shape of the raptor, comparing with descriptions in field guides and creating a list of possible suspects based on the fact that this was taken in Calgary, during the winter. If you came up with a few possible suspects, great work. But did you go any further?
If you did, you might have come up with a Sharp-shinned Hawk. You would be right. The wings are too rounded for Merlin or any other falcon, shape too small and body shape not to the right proportions of a buteo such as a Rough-legged or Red-tailed Hawk and the shape is once again far too small for either an eagle or a goshawk. Therefore it must be a Sharp-shinned Hawk. My neighborhood in Calgary has a healthy population of 4-6 Sharp-shinned Hawks so this make sense. From here, we can piece together a story,
Imagine a Sharp-shinned Hawk flying maybe 30-40 feet high, perhaps a little lower, circling at times. From its vantage, the raptor notices a small movement in the fresh snow below. Diving down, it attempts to nab a vole caught out in the open, plunging deep into the unmarked snow. Then what? Tough to say, and it will be a great mystery; we can only speculate at the final result but here is a breakdown of the photo.
I still wonder about the impression in the top right; what happened? Did the vole escape the hawk’s clutches the first time only to succumb to the second attempt? Did the hawk attempt to lift off without getting enough momentum the first go? Or was the impression in the corner caused by snow falling off a tree limb?
It was quite interesting to see all the same, regardless of what the result was.
Sunday Showcase: More Starlings
Posted by Matthew Sim
This summer while I was up in Calgary, I noticed a lot of starlings as well, especially in Fish Creek P.P. On one of my excursions to the park, I positioned myself beneath a Starling’s nest hole and managed to capture a few shots as the bird descended to feed it’s young.
Preparing for landing…
Landing; note food in beak
At nest hole; seems to be startled by the ferocity of its two young!
Calgary Herald Bird Photography competition
Posted by Matthew Sim
Interested in entering a local bird photography competition? For those of you who haven’t yet seen the article, the Calgary Herald is having a contest for bird photos seen in and around Calgary with the chance to win a copy of the National Geographic Bird Watcher’s Bible: A Complete Treasury. There are 4 simple ways to enter:
1. Tweet your photo on Twitter with the hashtag #yycphotovote in the tweet.
2. Submit your photo via Instagram with hashtag #yycphotovote in the caption.
3. Post it to the Calgary Herald’s Facebook page.
4. Email the photo as an attachment to readercontributions@calgaryherald.com.
Swainson’s Hawk
If you haven’t submitted any photos, go ahead and give it a try! The winners will be announced next Sunday on the Calgary Herald’s Facebook page. You can find out more about the competition here.
Good luck!
Migration at Hull’s Wood
Posted by Matthew Sim
Last week I rode my bike down to Hull’s Wood in Fish Creek P.P. twice to see how migration was coming along; I was not disappointed! As I rode through the woods both times, the chips of warblers and sparrows emanated from the trees and shrubs along the river. The woods were full of Yellow Warblers, Chipping Sparrows, House Wrens, Least Flycatchers and Warbling Vireos (not all of these were migrants) while several American Redstarts, Tennessee Warblers, Northern Waterthrushes and Baltimore Orioles were also present. There was also a single male Wilson’s Warbler, a single Yellow-rumped Warbler and a single Connecticut Warbler.
Least Flycatcher
Connecticut Warbler
Tennessee Warbler
This was all quite exciting but by 10:30 a.m. both days things quieted down for warblers so I went to Lafarge Meadows to check out shorebirds. Both days I found 6 species of shorebirds in Lafarge Meadows along the Bow River; Solitary and Spotted Sandpipers, Greater and Lesser Yellowlegs, Killdeer and Wilson’s Snipe.
Lesser Yellowlegs
Greater Yellowlegs
Migration is coming along well, so if you have the opportunity, get out there! There are lots of great spots in and around Calgary for migrating birds whether it be Inglewood Bird Sanctuary, Confederation Park, Weed Lake, Fish Creek P.P. or your own yard, find your favorite spot for migration and sit back and enjoy the show!
Beyond the reflection: the dangers of windows
Posted by Matthew Sim
As the fall migration starts to heat up and southbound warblers, vireos, flycatchers, sparrows and more pass through Calgary, birding can become quite exciting. While for us, this is a great time to be out and about, for the birds, it is dangerous; very dangerous. Migrating passerines (perching birds), for example, have to travel long distances all while on the lookout for predators such as hawks and cats, try to get food themselves and hope they don’t get caught in an early cold-snap which could potentially kill them. And this is just the beginning, there are even more dangers; one of them which is the most lethal of them all.
According to Sibley Guides Bird Mortalities, window strikes (when a bird hits a window) kill between 97 and 976 million birds each year, more than any other cause of bird deaths. (http://www.sibleyguides.com/conservation/causes-of-bird-mortality/). I was in my neighbor’s yard when I noticed one of these fatalities on his patio. While I had been there, a migrating Ovenbird had struck his window and had died. Though birds can crash into windows at any time of the year, window strikes tend to happen more frequently during migration as an influx of migrants come through unfamiliar territory, passing from tree to tree. As you can see in the photo below, it is quite easy for a bird to see its habitat reflected in a window and believe that it is simply another tree they are heading to; I’m sure most don’t know what hit them.
If I were a bird, I would probably fly towards these trees too.
Many bird populations are declining already due to a number of reasons and we don’t need to help them along with reflective windows when we could easily prevent window strikes occurring.
This Ovenbird had struck my neighbor’s window while I was in his yard.
A closer look at the detail on the Ovenbird’s feathers
Probably the worst part of all this is that window strikes are senseless; it’s not like natural selection where it was meant to happen, window strikes are part of our devastating side effects on nature; however, they can also be easily prevented.
There are many ways to prevent birds from striking windows. If you are having birds fly from your feeders or bird baths into windows, you can either move these bird attracting features further away (25-30 feet) from the window or closer (1-3 feet) to the window so that if the birds do hit the window at just 1-3 feet they will not be going fast enough to do any harm to themselves.
Apparently, there is also a material called CollidEscape which can reduce reflectivity and transparency on the outside but still leave the windows transparent from the inside. You can check it out here.
Here are a few more options:
- plant shade trees outside windows to break down reflections
- install snap-on window dividers
- put a hanging plant outside of the window
These are just a few of the ways you can avoid window strikes and help reduce the number of avian mortalities each year. Often, preventing window strikes can be as simple as closing the curtains or blinds when not using the windows. You can see even more solutions here.
If you have birds hitting your windows, there are many ways to stop it; help out bird populations!
Sunday Showcase: Spotless Spotted Sandpiper
Posted by Matthew Sim
Okay, try saying that 10 times fast. Spotted Sandpipers, while spotted in their breeding plumage, do not have spots in winter or when they are juveniles. Juveniles can be separated from winter plumaged birds by the scaling and barring on their upperparts, which nonbreeding adults do not have. Right around now, we start to see juveniles so look out for them; I recently found this juvenile in Votier’s Flats in Fish Creek Provincial Park.
Clash of the herons
Posted by Matthew Sim
On a recent bike ride of mine to Votier’s Flats in Fish Creek P.P. I came across a juvenile Great Blue Heron in a storm water pond so I got myself into a good position to photograph it. I sat watching and photographing the heron for some time when suddenly, an adult Great Blue flew in.
Juvenile Great Blue Heron
A rather impressive landing…
The adult heron seemed to “own” the ponds and did not take kindly to the young heron fishing in his waters. The adult proceeded to hunch himself up in a bid to frighten the juvenile.
All hunched up, the adult Great Blue proceeded to hurriedly chase the juvenile around the pond until finally the young heron took a running start and flew off.
Taking off with a running start.
Far from being content however, the adult flew after the young one and the two of them disappeared over the hills. I didn’t move from my position however, because I had a feeling that at least one of the herons would be returning. Sure, enough, several minutes later, the adult returned finally content at having chased the young upstart off of his territory.
Finally able to relax and scratch his head.