Pomarine Jaeger Resting At Seaside, It Is A Bulky Gull-Like Seabird; The Largest And Most Barrel Chested Of The Three Jaegers. Breeds On Arctic Tundra, Spends The Rest Of The Year At Sea. Breeding Adults Are Unique With Elongated Spoon-Shaped Central Tail Feathers. Also Note Blackish-Brown Upperparts, Messy Black Cap That Extends Below The Bill, And Extensive White Flash On Upper And Underside Of Outerwing. Rare Dark Morph Adult Is Entirely Blackish-Brown But Still Has White Wing Flashes. Immature Birds Are Variable, But In General, They Are Barred With Brown Above And Have Bold Black-And-White Bars On The Underwing And Undertail Coverts.

KEYWORDS

adult adults also arctic barred barrel bars bill birds black blackishbrown blackwhite bold breeding breeds brown bulky cap central chested coverts dark elongated entirely extends extensive feathers flash flashes general gull immature jaegers largest messy morph note outerwing rare rest sea seabird spends spoonshaped still tail three tundra underside undertail underwing unique upper upperparts variable white wing year