Who builds the nest, and what do they look like?
In the beginning stages of the nest both members of the pair, as well as some helpers many times, work equally hard on building the nest. In fact, the male can be even more active getting started. The breeding female, though, usually does the most building at the end when they are lining the nest. She is the one who gets everything comfortable in there, because she is the only one who sits in the nest to incubate and brood the young. American Crow nests are bulky things that are constructed of three parts 1) an outer basket of sticks, 2) a filling of mud and grass (often the grass is visible sticking out the bottom of the nest; a good clue it’s a crow nest), and 3) a thick bowl of something soft. Grapevine bark and cedar mulch, seem to be the most popular lining materials around here, with mammal fur and twine common. Paper is unusual but does get used, as does plastic occasionally. Perhaps the most unusual lining material I have found were some Emu feathers.
