Source: fir0002, via Wikimedia Commons. Traditionally, birdsong has been viewed as a male trait, and this bias has dominated research on the behavior. “For a long time, scientists thought that female ...

Scientists just recently decided to study female birds. What they found astounded them. Some female birds, like the two red-legged honeycreepers (Cyanerpes cyaneus) pictured above in Costa Rica, have ...