The streaked shearwater is a species of seabird. The adult bird averages 48 cm (19 in) in length, with a 122 cm (48 in) wingspan.
Region
Northwest Pacific
Typical Environment
Primarily pelagic over warm temperate to subtropical waters, it forages far offshore and along productive continental shelf edges. Breeding occurs on vegetated offshore islands with suitable soil for burrowing, often on steep slopes under forest or scrub. Outside the breeding season, birds disperse widely across the northwest Pacific, frequenting areas of upwelling and oceanic fronts. They come to land mostly at night to avoid predators.
Altitude Range
Sea level to 500 m
Climate Zone
Subtropical
Ease of Keeping
Beginner friendly: 1/5
A long-distance pelagic seabird, the streaked shearwater spends most of its life over open oceans, returning to land only to breed. It uses dynamic soaring to skim wave troughs with minimal effort and often gathers in vast rafts on the water. Colonies are nocturnally active, and birds are sensitive to light pollution and introduced predators.
Temperament
oceanic and gregarious
Flight Pattern
dynamic soaring and low, shearing glides over waves
Social Behavior
Breeds in dense colonies, nesting in burrows dug into soil or under vegetation. Mostly nocturnal at colonies, arriving after dusk and departing before dawn. Forms long-term pair bonds and typically lays a single egg, with both parents sharing incubation and chick-rearing.
Migratory Pattern
Seasonal migrant
Song Description
Generally quiet at sea, but at night in colonies it gives eerie wails, cackles, and moaning calls. Duetting between mates is common, and vocalizations help birds locate partners and burrows in darkness.
