- The corvids of North America consist of one species of jackdaw, four crows, two ravens, one nutcracker, two magpies, and ten species of jays.
- The corvines - crows, rooks, jays, magpies and jackdaws - are relentless stealers of other birds' eggs and chicks.
- A cliff is nest site for jackdaws; they pop in and out of the football and fist-sized holes in the soft yellow magnesian limestone.
- There are 113 members of the avian family called Corvidae, or corvids, which includes crows, jackdaws, rooks, ravens, as well as jays, nutcrackers and magpies.
- A clothesline is the strongest indication that this battered house is occupied, although jackdaws seem to be nesting in the chimney.