Birds usually have a prominent breast keel where heavy muscles are attached; in bats, only one muscle is attached to the breastbone, the ribs are flattened, and there is some fusing of the vertebral ...

In the past decade, some bat species have been added to the ranks of “singing” animals, with complex, mostly ultrasonic vocalizations that, when slowed down, rival the tunes of some songbirds. Like ...

For decades, Corey Tarwater and her research team have used mist nets by day to capture various species of tropical birds in Panama to study the effects of global change on bird populations. Now, the ...