A fairly sociable species, the southern crowned-pigeon is usually encountered in small groups of three to seven individuals, although large flocks of up to 30 have been observed in the past (2). In these parties, they search on the forest floor for fallen fruits and seeds, and also feed on small crabs found on muddy river banks (2) (4). During the hottest part of the day, the southern crowned-pigeon perches in dense shrubs, attempting to escape the tropical heat (2). If disturbed, the southern crowned-pigeon will often run for cover, but if sufficiently alarmed, it will fly to a perch in a large tree and will remain there, nervously wagging its tail (2) (4).
Breeding in the southern crowned-pigeon has been observed from September to early November, but the breeding season is probably longer than this. A well-built, neat nest made of sticks, dead stems and palm leaves with a shallow depression lined with leaves, is situated 4 to 15 metres above ground on a tree branch. Into this nest a single, white egg is laid (2). Like other pigeons, the southern crowned pigeon produces crop-milk, a nutritious secretion from the lining of the crop, which is regurgitated to feed the chick (6)