Every year, billions of birds undertake intrepid journeys between temperate regions in North America and their tropical wintering grounds in South America. "Birds are great indicator species of ...

A study shows that rainfall controls tropical bird breeding by triggering the growth of plants and insect populations.

Migrating birds shown with spectrograms of the calls they use in flight, which researchers captured via acoustic monitoring complemented their radar data on migration patterns. Every year, billions of ...

Scientists know comparatively little about the breeding seasons of tropical birds. This point is underscored by a new study ...