. A history of British birds . th : as muchas in some examples of the Glaucous Gull; but in otherrespects the usual dimensions of the latter sj)ecies are farsujierior. The young bird has the bill pale yellow at the base, theanterior half horny-black ; the irides dark brown, head andneck dull white, clouded with pale ash-brown; the back thesame colour; secondaries, tertials, and all the wing-covertsdull white, marked transversely with pale brown angular ICELAND GULL. 649 streaks; primavies white; tail-coverts and tail-feathersgreyish-white, the latter marked across with broadish linesof pale br
. A history of British birds . th : as muchas in some examples of the Glaucous Gull; but in otherrespects the usual dimensions of the latter sj)ecies are farsujierior. The young bird has the bill pale yellow at the base, theanterior half horny-black ; the irides dark brown, head andneck dull white, clouded with pale ash-brown; the back thesame colour; secondaries, tertials, and all the wing-covertsdull white, marked transversely with pale brown angular ICELAND GULL. 649 streaks; primavies white; tail-coverts and tail-feathersgreyish-white, the latter marked across with broadish linesof pale brown, which are more numerous about the basethan towards the end; chin dull white ; neck, breast, belly,and all the under surface of the body, dull white, streakedtransversely with pale brown ; legs yellowish-brown. The markings on the feathers are gradually lost in thesuccessive moults, the same phases being passed throughas those already noticed in the Glaucous Gull; and by thefourth summer the adult plumage has been VOL. III. 4 o 650 GA VLE.
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Keywords: ., bookauthorsaun, bookcentury1800, bookdecade1870, booksubjectbirds
