. A practical handbook of British birds . plumage asadult summer, but some scapulars mottled pale brown and somepale brown mottlings on under-parts ; wings and tail as 2ndwinter. \£\ Third winter and summer.—Like adult but varying amount ofbrown mottling on tail (occasionally pure white), 2nd primary oftenwith less white at tip than in adult and sometimes white is speckledwith brown, 3rd primary often without mirror, primary-covertsusually mottled, freckled or marked with varying amount of brownbut sometimes blue-grey with dark shaft-streak and occasionally THE HERRING-GULL. 751 as adult, oute
. A practical handbook of British birds . plumage asadult summer, but some scapulars mottled pale brown and somepale brown mottlings on under-parts ; wings and tail as 2ndwinter. \£\ Third winter and summer.—Like adult but varying amount ofbrown mottling on tail (occasionally pure white), 2nd primary oftenwith less white at tip than in adult and sometimes white is speckledwith brown, 3rd primary often without mirror, primary-covertsusually mottled, freckled or marked with varying amount of brownbut sometimes blue-grey with dark shaft-streak and occasionally THE HERRING-GULL. 751 as adult, outer webs of some outer primaries and of secondariessometimes freckled brown. Fourth winter and summer.—Like adult. Measurements and structure.—$ wing 410-450 mm. (juv. 400-425), tail 160-180, tarsus 63-68, bill from feathers 48-55 (juv. 48-54) (12 British measured). $ wing 390-425 (juv. 375-400), bill 47-53 (juv. 44-51). Primaries : 1st narrow, pointed, and about two-thirds primary-coverts, 2nd longest, 3rd usually as long but occa-.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbirds, bookyear1920
