Corvus brachyrhynchos, American crow, is a large passerine bird species of the family Corvidae. It is a common bird found throughout much of North America. It is all black with iridescent feathers, and from beak to tail, it measures and average 16–20 inches (almost half of which is tail!). The most usual call is CaaW!-CaaW!-CaaW!.
The American crow is omnivorous. It will feed on invertebrates of all types, carrion, scraps of human food, seeds, eggs and nestlings, and various grains. They are active hunters and will prey on mice, frogs, and other small animals. In winter and autumn, their diet is more dependent on nuts and acorns. The American crow is one of only a few species of bird that has been observed modifying and using tools to obtain food.
Image: American Crow - Singing Sands, Bruce Peninsula National Park, Ontario, Canada -- 2007 June