Northwestern Crow Nests

"Generally solitary, but sometimes built in association with a few other individuals in small, loose colonies in trees or sometimes large bushes. Very rarely, it will nest on cliffs in a recess or even on the ground in a remote area if overhung by a rock for shelter. It is a typical crow nest with 4-5 eggs usually laid." [Wikipeidia]

More on Northwestern Crows from the Cornell University Bird Guide