Bald Eagles at Farmington Bay
I paid another visit to Farmington yesterday and while I got some nice shots of a few other species I was reminded of the Bald Eagles that were winter residents out there just a few short months ago. I miss them. So when it turned overcast this morning and I couldn’t go out photographing birds I decided to revisit some of the eagle images I got at Farmington three months ago. Canon 7D, 1/2500, f/7.1, ISO 500, 500 f/4, 1.4 tc This carp may have been an easy catch for the eagle because the water was quite shallow and the fish was likely stunned (though it did appear to still be alive) by the rotenone used to control these fish at the refuge. Canon 7D, 1/2500, f/7.1, ISO 500, 500 f/4, 1.4 tc Both of these images of the eagle with the fish were difficult exposures with the white head facing toward the sun but I liked the action and the good look at the carp. Canon 7D, 1/2000, f/6.3, ISO 500, 500 f/4, 1.4 tc This is one of my better exposures on both the white head and the very dark body and wing plumage in the species. Early morning light certainly helped with that exposure. Canon 7D, 1/1250, f/6.3, ISO 500, 500 f/4, 1.4 tc I like the unusual head turn from this juvenile bird and the Wasatch Mountain background. Canon 7D, 1/4000, f/6.3, ISO 640, 500 f/4, 1.4 tc (wish I’d had lower ISO in this image…
Common Raven Disposing of Eggshells
When this Common Raven landed on a large rock fairly close to me last week on Antelope Island I could see that it had something in its beak and assumed that it was some type of food. It wasn’t until I got home and processed the images that I could tell what it was. Canon 7D, 500 f/4, 1.4 tc, 1/2500, f 6.3, ISO 500 It turns out that it was eggshell, presumably from its own nest. In researching Common Raven eggs I found that they have this kind of marking and color (though there is some variability in both) and this shell remnant seemed to be about the right size for a raven so my assumption is that it’s a raven eggshell and not leftovers from a meal from raiding the nest of another bird. There is a raven nest relatively close to this rock. Canon 7D, 500 f/4, 1.4 tc, 1/2500, f 6.3, ISO 500 Here the raven is very carefully placing the shell in a crevice in the rocks. At the time I took the photo I couldn’t figure out why the bird would simply abandon what I thought was food. Canon 7D, 500 f/4, 1.4 tc, 1/3200, f 6.3, ISO 500 Here the raven has dropped the eggshell… Canon 7D, 500 f/4, 1.4 tc, 1/2000, f 7.1, ISO 500 and then it hopped to the peak of the rock to “crow” about its accomplishment. Birds of North America Online says this about raven eggshell disposal – “No…
Marsh Wrens of Bear River Migratory Bird Refuge
This week I was finally able to get some decent images of Marsh Wrens. Canon 7D, 1/2000, f/8, ISO 400, 500 f/4, 1.4 tc In the past these birds have always been buried too deeply in vegetation for me to get shots I liked but a couple of days ago they finally cooperated with me. Canon 7D, 1/1600, f/8, ISO 400, 500 f/4, 1.4 tc Marsh Wrens have incredibly interesting behaviors. For example, western males must learn up to 200 different songs (eastern birds only learn about 50). Perhaps that’s why these males sing so much – it would take a lot of practice to learn that many “tunes”. Canon 7D, 1/1600, f/8, ISO 400, 500 f/4, 1.4 tc These birds are extremely territorial and aggressive. They are polygynous (males mate with multiple females) and in order to attract females the male builds from 6 to 22 “dummy” nests for every one that is actually used to raise a brood of chicks. We could see several of these nests buried in the cattails along the refuge road. Canon 7D, 1/2500, f/7.1, ISO 400, 500 f/4, 1.4 tc According to the Bear River Blog many of these nests were destroyed by our recent stormy weather and heavy rains so many of these males have had to start over. Canon 7D, 1/2000, f/8, ISO 400, 500 f/4, 1.4 tc Marsh Wrens of both sexes regularly destroy eggs and chicks of other birds near their territories, including those of…
American Kestrels – What They’ll Eat and What They Won’t.
I’ve always found it fascinating to watch these little falcons eat. A gruesome experience to be sure but so much more interesting than observing a raptor such as an owl who simply swallows its prey whole. And if you watch carefully there’s a whole lot more going on during the process than first meets the eye. Kestrels can be pretty picky eaters. I’ve documented in another post on this blog that they often refuse to eat the intestinal tract of their prey and deliberately discard it. Kestrels, like other raptors, eject pellets of indigestible materials like fur, feathers, chitin and bone. All food that is swallowed first goes to the crop. From there the usable food continues on to the stomach but the indigestibles stay in the crop, are formed into a pellet and regurgitated roughly 23 hours (in the case of kestrels) after the meal was consumed. Canon 7D, 1/800, f/7.1, ISO 640, 500mm f/4, 1.4 tc The kestrels I’ve watched eating voles and mice typically eat the brain, decapitate the rodent, then go for the soft internal protein rich muscles and other organs (discarding the intestines). Since kestrels tear their prey into bite-sized pieces they can pick and choose what they actually swallow. Canon 7D, 1/400, f/8, ISO 640, 500mm f/4, 1.4 tc Pellet expulsion can be difficult and traumatic as I’ve documented elsewhere on this blog with Northern Harriers and I suspect that’s one of the reasons that kestrels try to avoid swallowing as much fur as possible. When opening up the body cavity they often get a beak-full of…
Northern Harrier with Nesting Material
I’ve been photographing Northern Harriers in northern Utah for five years now and until earlier this week I’d only seen this species carrying nesting material once before and wasn’t able to photograph it. Harriers are very common here during winter but most of them head north for the breeding season and those that stay usually build their nests in inaccessible areas of the marsh, so it’s rare for me to see any nesting activities. Canon 7D, 500 f/4, 1.4 tc, 1/2000, f/7.1, ISO 400 Two days ago Mia and I were photographing birds at Bear River Migratory Bird Refuge. We were about to call it a day because it was late in the morning and light was no longer optimal when we spotted this harrier flying at a distance. We figured it would veer off before it got close, as they always seem to do out there, but this one kept coming toward us. We were watching it through our lenses and soon noticed that it had nesting material in its beak. Canon 7D, 500 f/4, 1.4 tc, 1/2000, f/7.1, ISO 400 By chance we happened to be at a place on the dirt road that was within 100′ or so of the nest of this bird. It decided to ignore us and come in to complete its delivery. Canon 7D, 500 f/4, 1.4 tc, 1/2000, f/7.1, ISO 400 The nest is apparently in this bed of last year’s dead Phragmites. The dark spots you see in the last three images of this…
Willet Wars
Earlier this week Mia and I witnessed an incredible display of avian aggression on Antelope Island. I’ve often seen and photographed battling birds but I’ve never before seen such a long-lasting and vicious fight as this one between two Willets. It lasted for over 20 minutes and I took 413 photos of the action but don’t expect high quality images in this post as the conditions were far from ideal. We had contrasty sidelight, lots of obstructingvegetation between us and the birds and constantly changing lighting conditions as clouds moved in and out and the birds moved from place to place as the battle raged. But as I’ve stated before on this blog I’ll often post images of interesting behaviors even if they are less than perfect in image quality. And to me this behavior was certainly interesting. Canon 7D, 500 f/4, 1.4 tc, 1/1600, f/5.6, ISO 500 The Willets were already fighting as we approached them in my pickup and they mostly ignored us after pausing for a few seconds when we first drove up. Canon 7D, 500 f/4, 1.4 tc, 1/1250, f/5.6, ISO 500 In this and the following image the bird on the right had its bill tightly clamped on the upper mandible of the other bird. Canon 7D, 500 f/4, 1.4 tc, 1/1250, f/5.6, ISO 500 The bird on the left was desperately trying to break the grip of its tormentor but it took some struggling before it finally succeeded. Canon 7D, 500 f/4, 1.4 tc, 1/1250, f/5.6, ISO…
Barn Owl in Flight – Finally Again!
It’s been over four years since I’ve been able to get flight shots of Barn Owls and it’s been a very long wait. Typically Barn Owls hunt only at night but during the cruel winter of 2008 a few of them were forced to hunt in the morning hours just to survive and I was able to get quite a few nice shots of them in flight. I haven’t seen them hunt in daylight since then, until just recently when I’ve discovered one individual that has been doing it regularly. 1/800, f/6.3, ISO 500 So far Mia and I have had two chances with this bird. It was flying along the side of the road so I had to speed up to get in front of the owl then quickly turn around so I could photograph it as it flew toward us with the light at the best angle. This owl was flying very fast toward an apparent destination (rather than hunting) so we’d get a few shots off as it passed by very quickly. 1/640, f/6.3, ISO 500 Then I’d very quickly turn around, race up the road to get ahead of the owl, turn around again and fire away as the bird flew by. 1/800, f/6.3, ISO 500 I was able to do that three times before I ran out of road. Very exciting! 1/800, f/5.6, ISO 640 Then a few days later, as we were returning from a morning of photographing other birds after clouds had moved in and we…
A Loggerhead Shrike, a Spider and Spit
A few days ago Mia and I found this Loggerhead Shrike sitting prettily on a dried sunflower on Antelope Island. The bird was using the sunflower as a hunting perch. 1/1600, f/8, ISO 500 I’ve always been amazed by the incredible eyesight of many bird species. This shrike somehow spotted a spider crawling through the thick grass about 20 feet away from where it was perched and immediately flew down to grab it. 1/1600, f/7.1, ISO 500 It was a relatively small spider and I have no idea how the shrike was able to see it in all the dense grass. Even though the background is busy here I still liked the shot for the interesting look at both the spider and the tongue of the shrike. It’s my presumption from looking at this photo that the saliva of the shrike is viscous and sticky, enabling the prey to stay attached to the tongue during the very fast process of pulling the spider to the back of the throat with the tongue. 1/1600, f/7.1, ISO 500 A heavily cropped, close-up view of the same image provides a clue. You can see that there’s a sheet of saliva stretched between the bottom of the tongue and the floor of the lower mandible and it does appear to be quite viscous. I had no idea that it would be so “juicy” in there. Nothing earth-shattering here, just some avian trivia in a photo that I found interesting (yes, my interests can be…
Early Spring Birds and Craziness on Antelope Island
Typically our first spring camping trip is a shake-down cruise for the trailer to Antelope Island. If anything goes wrong with the trailer (and it sometimes does after sitting all winter) I’ll be relatively close to home. This year we spent the last two days of March on the island. Most of the photos in this post were taken on that trip. 1/2500, f/6.3, ISO 500 There’s been a few Western Meadowlarks on the island for much of the winter but they’ve returned in large numbers now. In all my travels in the west I don’t think I’ve ever seen any other area with such a high concentration of this species. At times their beautiful song resonates all over the hills of the island. Meadowlarks always bring back fond memories for me of growing up on the Montana farm. 1/2500, f/6.3, ISO 500 Loggerhead Shrikes are another very common species, especially on the northern part of the island. They’ve been absent all winter but we’re seeing more of them on each visit now. It was cloudy when this image was taken and I didn’t get a lot of light in the eye but I think there’s just enough. 1/2500, f/7.1, ISO 500 I always look forward to the return of the Long-billed Curlews with great anticipation and they started appearing about 10 days ago. I was happy to get this shot of the male on the right displaying for the female. Male and female curlews are almost identical but they can be differentiated by their…
Common Merganser
This winter I had my first good opportunities with the Common Merganser. A single female in non-breeding plumage spent several weeks at a pond I frequent and even though the lighting was typically marginal while I was there I still got some shots of her that I like. 500mm, 1.4 tc, 1/500, f/7.1, ISO 640 Notice the serrated bill of this fish eating duck – a very effective tool for holding on to their slippery prey. 500mm, 1.4 tc, 1/2500, f/7.1, ISO 500 This duck gave me a variety of interesting poses in the several days I photographed her but much of the time she was too far away for a quality shot. This was one of the exceptions. 500mm, 1.4 tc, 1/400, f/7.1, ISO 640 I had a difficult time getting light in the eye while she was preening. Here’s one image where I succeeded. 500mm, 1.4 tc, 1/1600, f/7.1, ISO 500 I’m convinced that the reason this merganser hung around the pond for as long as it did is because she was an accomplished thief. The pond had a resident population of about a dozen Pied-billed Grebes and those grebes are very good fishermen. I seldom saw the merganser actively fishing but whenever a grebe caught a fish this duck was instantly in pursuit in an effort to steal the fish – which is just what she’s doing in this shot. 500mm, 1.4 tc, 1/1600, f/7.1, ISO 400 I was often amused by the variety of positions the merganser could hold her crest – from slicked back…