Flight-calling in Wood-Warblers (Parulidae): Does Species-Specific Behavior Drive Evolution of Calls?

Flight calls are poorly understood vocalizations given by migrating warblers (Parulidae) that are thought to...

Saving Tropical Migratory Bird Habitat

Migratory birds, songbirds in particular, over-winter in the tropics. Much of the land is being deforested to...