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BiologyEarth burrows or rock crevices underneath the forest canopy are the favoured nesting sites of the providence petrel (2). Breeding takes place over winter, at the same time each year, with the female laying just a single egg (7). Following an incubation period of approximately 55 days, shared attentively by both parents, chicks begin to hatch in mid-July. Once hatched, the parent birds spend most of their time foraging away from the nest, returning only for short periods at night to feed the chick (3). By November most of the chicks will have fledged (8). With the ability to dive to depths of up to five metres, the providence petrel feeds primarily on fish and squid but will also take crustaceans and, on occasion, scavenge for offal cast from fishing boats (2).