This, when adult, is readily distinguishable from the ordinary bird by the absence of the blush from its plumage, and by the curled feathers that project from and overhang each side of the head, which with some difference of coloration of the bill, pouch, bare skin round the eyes and irides give it a wholly distinct expression. [Please select]
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His lids came down on the lower rims of his irides. [Please select]
BEWICK'S SWAN CYGNUS BEWICKI Whole plumage pure white; bill black, orange-yellow at the base; irides dark; feet black; tail of eighteen feathers.' [Please select]
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_Young_--crest and ruff wanting; upper plumage and flanks dusky ash, under parts white; irides white, surrounded by red. [Please select]
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The comb is very small; irides, bright orange; feet and legs, light flesh-color. [Please select]
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