ML646316213

観察結果の詳細

Including one adult Greenlandic Herring Gull (Larus argentatus undescribed/Larus smithsonianus undescribed). Adult, showing possible signs of being 4th plumage cycle including; brownish cast to dorsal/topside, smudge on tail, brown hooded appearance to head and neck, pale base to bill with black ring on bill and yellow only on bill tip. Black markings on outer primaries to p5 (black mark on p5, incomplete sub terminal band), string of pearls’ effect created by deep tongues on primary feathers, Mirrors on p9-p10, p9 mirror isolated (but just barely), p10 mirror completely merged with tongue [all typical signatures of this taxon].