Charles Dixon,
British Sea Birds
“ The Rock Dove is an early breeder, congregating in colonies on such cliffs as afford it the necessary shelter. Wherever possible the nests are made in caves; where these are wanting the birds scatter themselves about the cliffs, and place their nests in any convenient fissure or cleft. The bird pairs for life, and yearly resorts to the same breeding stations, some of the caves gaining a local reputation in this respect. The nest is placed on some ledge or in a cranny, and consists of a little dry grass, twigs, roots, or stems of plants, arranged in a flat plate-like form. ”
