A mid-sized, blue-grey pigeon with darker head and neck and black wing bars, but it interbreeds with domestic pigeons so several colour varieties possible. Basically blue-grey with green-purple sheen across neck. Wings darker and tail black sub-terminal band. Some races have white lower back. Always has two long black bars across wing coverts. Gregarious, mixing with other doves. Feeds in flocks on spilt grain and sprouting cereals. Also in remote rocky places with cliffs and ruins. Nests colonially in cavities and on ledges in buildings and cliffs.