Hard bites and slow songs: How beak size affects the singing and evolution of songbirds
The Java sparrow is ready for the video recording. As I hold it carefully in my hand in order to transfer it to the recording ...
PBS7y
Natural Selection in Real Time
For example, the cactus finch has a long beak that reaches into blossoms, the ground finch has a short beak adapted for eating seeds buried under the soil, and the tree finch has a parrot-shaped ...