Do Hummingbirds Cast Pellets?
Yesterday morning I may have photographed a hummingbird casting tiny pellets. I’d never heard of such a thing in hummers.
Tag: chitinous exoskeleton
Western Grebe Swallowing A Crayfish
Western Grebes are almost exclusively fish-eaters but yesterday morning at Bear River MBR I photographed one consuming a crayfish.
A Shrike Partially Consumes Its Own Pellet
This post is documentary only. The images are not aesthetically pleasing. Loggerhead Shrikes produce a pellet from an insect meal only 35.5 minutes (on average) after consumption. This is an amazingly fast turn-around time (Short-eared Owls average 8.5 hours before a pellet is produced from their rodent prey). When shrikes are consuming insects and spiders their pellets consist of the indigestible chitinous exoskeletons of those arthropods. I’ve seen and photographed Loggerhead Shrikes ejecting pellets many times but what I photographed on this August morning was new to me. Because of the cluttered setting I was mostly only watching this juvenile through my lens (not photographing it) when I could tell it was about to chuck up a pellet. Every time I’ve observed this behavior in the past the pellet was ejected quickly and cleanly and simply fell to the ground. But this bird had a surprise for me. It caught the pellet in the tip of its beak… and manipulated it there for some time. Then it very deliberately mashed up the pellet and appeared to be swallowing parts of it as other smaller pieces fell to the ground. My guess would be that about half of the pellet was consumed as the other half fell away, though I can’t be absolutely certain that any of it was actually eaten because my view of what was happening was not always a clear one. I wish I knew what was really going on here. This is the only time I’ve ever seen a bird (of any species) manipulate a pellet after…
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Western Grebe Swallowing A Crayfish
Western Grebes are almost exclusively fish-eaters but yesterday morning at Bear River MBR I photographed one consuming a crayfish.
A Shrike Partially Consumes Its Own Pellet
This post is documentary only. The images are not aesthetically pleasing. Loggerhead Shrikes produce a pellet from an insect meal only 35.5 minutes (on average) after consumption. This is an amazingly fast turn-around time (Short-eared Owls average 8.5 hours before a pellet is produced from their rodent prey). When shrikes are consuming insects and spiders their pellets consist of the indigestible chitinous exoskeletons of those arthropods. I’ve seen and photographed Loggerhead Shrikes ejecting pellets many times but what I photographed on this August morning was new to me. Because of the cluttered setting I was mostly only watching this juvenile through my lens (not photographing it) when I could tell it was about to chuck up a pellet. Every time I’ve observed this behavior in the past the pellet was ejected quickly and cleanly and simply fell to the ground. But this bird had a surprise for me. It caught the pellet in the tip of its beak… and manipulated it there for some time. Then it very deliberately mashed up the pellet and appeared to be swallowing parts of it as other smaller pieces fell to the ground. My guess would be that about half of the pellet was consumed as the other half fell away, though I can’t be absolutely certain that any of it was actually eaten because my view of what was happening was not always a clear one. I wish I knew what was really going on here. This is the only time I’ve ever seen a bird (of any species) manipulate a pellet after…