This article explores how cardinals perceive their environment, and how they explore their place in it, especially with respect to color.
Do Cardinals Know They Are Red? A Closer Look at a Christmas Icon
The Club-Winged Manakin: A Bird That Plays Its Wings
The club-winged manakin, a small South American bird, produces unique wing-generated sounds for courtship, trading flight efficiency for the ability to attract females with precise stridulation.
ERIC DORFMAN 