PARASITIC JAEGER

PARASITIC JAEGER(Stercorarius parasiticus) – (See images below)
DESCRIPTION: The Parasitic Jaeger or Arctic Skua is a pelagic seabird comes in different plumages (morphs). One morph has dark grey-brown plumage overall. Another morph is grey for the upper parts with a black cap and white cheeks, a grey-white breast and white under parts. The bill, legs and webbed feet are dark grey. When in flight the longer central tail feathers are visible. Both sexes are similar. The parasitic jaeger measures around 45 cm (18 inches) long.
VOICE: https://www.xeno-canto.org/species/Stercorarius-parasiticus
NAME: The English name ‘Jaeger’ comes from German and means ‘hunter’. And hunt this bird does, stealing prey from other birds, hence the adjective ‘parasitic’ both in the English and Latin names. The Latin genus name ‘Stercorarius’ refers to ‘dung’, as this species goes after fish scraps (offal) from fishing vessels.
HABITAT: When not breeding in the tundra, these birds can spend their whole time at sea, usually above the continental shelf.
DIET: Parasitic jaegers hunt other birds until they disgorge their catches while at sea. When on land (for breeding), they will prey on rodents, as well as birds and insects.
NESTING: The nest of the parasitic jaeger is a small depression on the ground. One or two green-brown eggs are laid, which are incubated by both parents. The chicks are fed by both parents.
DISTRIBUTION: The breeding range of this jaeger covers the tundra and coastal areas in the Arctic. For the winter it can be observed offshore along the coasts of the southern USA, Mexico, and of the Southern Hemisphere. Some vagrants have also reached Hawaii.
CONSERVATION: The population of this jaeger is widespread and large enough that it is currently not considered at risk.
SIMILAR SPECIES: Pomarine Jaeger, Long-tailed Jaeger
REFERENCES: https://www.borealbirds.org/bird/parasitic-jaeger
http://www.oiseaux-birds.com/card-parasitic-jaeger.html
https://www.allaboutbirds.org/guide/Parasitic_Jaeger/lifehistory
https://en.wikipedia.org/wiki/Parasitic_jaeger
http://nzbirdsonline.org.nz/species/arctic-skua
https://www.audubon.org/field-guide/bird/parasitic-jaeger
https://identify.whatbird.com/obj/491/overview/Parasitic_Jaeger.aspx
Parasitic Jaeger – Fish & Wildlife Service, Alaska (.pdf document)
http://www.npolar.no/en/species/arctic-skua.html (parasitic jaeger) (Norwegian Polar Institute)

Parasitic Jaeger - Handa Island, Northern Highlands, Scotland - June 4, 2012 - Donald Macauley
Parasitic Jaeger – Handa Island, Northern Highlands, Scotland – June 4, 2012 – Donald Macauley
Parasitic Jaeger immature off Malpe, India - Oct. 2011 - L. Shyamal
Parasitic Jaeger immature off Malpe, India – Oct. 2011 – L. Shyamal
Parasitic Jaeger, dark morph - Norwick Ward - June 3, 2006 - Mike Pennington
Parasitic Jaeger, dark morph – Norwick Ward – June 3, 2006 – Mike Pennington

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