The Cooper's Hawk, Accipiter cooperii, is a swift forest hunter
which uses its great speed and accuracy to chase and catch songbirds.
The adult Cooper's Hawk is characterized by its long tail, blue-gray back, long wings, reddish horizontal barring on the underparts and red eyes. Males and females are similar in appearance although the females are a bit bigger.
Juveniles are very different being brown overall with vertical brown streaks on the belly and breast and yellow or brown eyes. Adults are 14-21 in/35-53 cm long with a wingspan of 27-36 in/58-92 cm.
The Cooper's Hawk ranges from southern Canada to northern Mexico. It was named after William Cooper who was an American naturalist and collected a specimen of the bird in 1828.