On the day of the exam, the professor has a table with five paper bags ... the students are asked to identify stuffed birds whose bodies (except for their feet) are covered by bags.

All bird feet are not the same. One size does not fit all. Different birds have different jobs in this world, and their feet, one of the main tools for the work they do, have evolved to fit the task.

Bird feet, like their bills, offer clues to the environmental niche that each species holds, although that’s not the case 100 percent of the time. (A semipalmated sandpiper has slightly webbed f ...

If you look closely at how this bird is gripping the apple, you'll notice something interesting about its feet. The red-breasted sapsucker is a member of the woodpecker family, and most species of ...

Meanwhile, birds that spend more time on the ground (such as emus and kiwis) or perching (crows, sparrows, and so on) have entirely different feet altogether, adapted to the task at hand—or foot.

There are not many birds out there that have feet a different color than their legs. From the top of their legs to the bottom of their "toes," most birds are uniform in color. With many birds ...