Blue jays, Cyanocitta cristata, and indeed most other birds of the crow family, are very well adapted to generalized feeding. Their strong beaks tackle everything from small mammals and other birds to insects and seeds. Such a varied diet ensures their success in almost any habitat, and indeed crows can be found almost everywhere. Both male and female jays also open their all-purpose bills quite frequently to noisily harass any trespassers on their territory.