Have you ever wondered how a bird sings? Or made some of their less melodic vocalizations, like squawks, trills, or chirps? It all happens in the syrinx, a vocal organ unique to birds. Reptiles, ...

Classic rock can get a little melodramatic. For example, the lyrics of Lynyrd Skynyrd’s “Free Bird” don’t warrant the tune’s over the top instrumental. The song was a hit but it missed the No. 1 spot.

A small tree or shrub found in mountainous Central and South American rainforests has a most unusual relationship with the birds that pollinate its flowers, according to a new study. The plant known ...