Species: Stercorarius longicaudus

Long-tailed Jaeger

Species

Birds

Show on Lists

Salish Sea-reliant birds

Encyclopedia of Puget Sound

Classification

Kingdom

Animalia

Phylum

Craniata

Class

Aves

Order

Charadriiformes

Family

Stercorariidae

Genus

Stercorarius

NatureServe

Source:
ELEMENT_GLOBAL.2.100027

Classification

Other Global Common Names

Mindrião-de-Cauda-Comprida, Rabo-de-Junco-Preto - Salteador Cola Larga - labbe à longue queue

Informal Taxonomy

Animals, Vertebrates - Birds - Other Birds

Formal Taxonomy

Animalia - Craniata - Aves - Charadriiformes - Stercorariidae - Stercorarius

Ecology and Life History

Migration

false - false - true - Migrates northward to nesting grounds, arriving late May-June (mostly mid-June on Banks Island). Migrating birds are uncommon off west coast, very rare inland and off east and Gulf coasts (National Geographic Society 1983). Nonbreeders begin southward migration in early July, breeders depart August-September. Migrates through tropics April-May and September-October (Pratt et al. 1987).

Non-migrant

false

Locally Migrant

false

Food Comments

On tundra feeds on lemmings and mice; also eats insects, fishes, carrion, berries, and eggs and small birds. Less apt to harry seabirds for food than are other jaegers (Terres 1980). Young initially are fed insects for a few days, then change to lemmings partially digested by parent (Johnson and Herter 1989).

Reproduction Comments

Eggs are laid mainly mid- to late June. Both adults, in turn, incubate 2, sometimes 1-3, eggs for 23-25 days. Hatching was recorded in second week of July on Ellesmere Island. Young are tended by both parents, fledge in 22-28 days, attended by adults for 10-21 days after fledging. Second-hatched chick in most broods usually does not survive (Johnson and Herter 1989).

Ecology Comments

Pairs defend large territories, but often hunt over an area larger than the territory; in northern Sweden, hunted up to 2.7 kilometers from nuest, usually less than 700 meters (Andersson 1971).

Length

Weight

313

Conservation Status

NatureServe Global Status Rank

Global Status Last Reviewed

1996-11-26

Global Status Last Changed

1996-11-26

Other Status

LC - Least concern

Distribution

Conservation Status Map

Global Range

Circumpolar. BREEDS: in arctic of Alaska, Canada and Greenland; in Old World from Jan Mayen, Spitsbergen, northern Eurasia. NONBREEDING: at sea in Atlantic and Pacific Oceans, more commonly in cold southern localities (Godfrey 1966) such as off Argentina and Chile.

ELEMENT_GLOBAL.2.100027