One of the more common large birds you may see overhead throughout North America is the turkey vulture, especially in the spring as they migrate in large numbers northward. One of their features to help identify them when they are in flight, even if they are at a great distance away, is their flight style….
While out hiking in a field, you spot a little american kestrel in a telephone wire. Its back is to you and you notice an interesting pattern on the back of its head, which appears to resemble eyes. These feather patterns aren’t eyes though, they are called ocelli, or false eye spots. This adaptation can…
For birds to survive, they need keen eyesight, to find food, to navigate their environment, find a mate and avoiding becoming something else’s meal. So it is critical to protect their eyes, especially when flying through the air and through vegetation where there is an increased risk of something hitting their eyes and causing abrasions….
If you look at the bills of some duck species, you may see it lined with fine comb-like structures. These little projections are called lamellae and are made of keratin. These slightly flexible structures are used to filter and strain food from mud or water. These structures will be seen mostly in dabbling ducks along…
The tomial tooth, or the mandibular tomia, is not really a tooth at all, but a projection that can be seen in the outer edge on beaks of falcons, kites, and shrikes. This “tooth” also corresponds with a divot on the lower bill, called the mandibular notch; these together act like a pair of scissors…
In the bird world, if you say ear tufts, you would probably instantly think of the ear tufts on owls. This feature is found on many owl species, about 50 of the 200 plus owl species have ear tufts, seemingly mostly occurring in nocturnal, forest dwelling species. But there are many other species that possess…