. A practical handbook of British birds . llaries pale slate-grey ; tail and wing as winter and wing-covertsas upper-parts. Nestling.—As in Black Tern but line across fore-head black ;.lores and narrow line round fore-part of eye white ; ground -colourof upper-parts brighter buff than in Black Tern, especially on sidesof head, neck and upper-mantle which are orange-buff, blackmarkings much as in Black Tern but more broken up into blotchesexcept for lines on sides of mantle ; chin white ; throat dark brownor blackish to buff-brown ; breast and centre of belly white (much,purer white than in Bla
. A practical handbook of British birds . llaries pale slate-grey ; tail and wing as winter and wing-covertsas upper-parts. Nestling.—As in Black Tern but line across fore-head black ;.lores and narrow line round fore-part of eye white ; ground -colourof upper-parts brighter buff than in Black Tern, especially on sidesof head, neck and upper-mantle which are orange-buff, blackmarkings much as in Black Tern but more broken up into blotchesexcept for lines on sides of mantle ; chin white ; throat dark brownor blackish to buff-brown ; breast and centre of belly white (much,purer white than in Black Tern) : sides of body and vent brownishto orange-buff. Juvenile.—Fore-head and fore-part of crown white, usually atfirst washed brown-buff ; rest of crown and nape black, feathersedged and tipped greyish-white or bumsh (when worn back of crownnearly uniform black) ; back of neck white, feathers tipped darkslate ; mantle-feathers with black-brown tips narrowly edged buff ;scapulars same with broad yellowish-buff margins (paler and_. THE WHISKERED TERn! 691 brighter than C. niger and leucopterus); rump and upper tail-coverts ash-grey, latter with faint whitish tips ; ear-coverts blacker than adult ; whole under-parts white ; tail-feathers pale slate-grey with tips edged pale buff and subtermi- nally black-brown ; wing-feathers as adults but tips rather darker, innermost secondaries as scapulars ; greater and median coverts slate- grey faintly tipped pale yellowish- buff with a small brownish subter- BiU of the Whisl? Tern minal mark ; lesser coverts slate- (cnudonias i. uucopareim). grey with brownish centres. First winter.—Like adult winter except for brown tips ofunmoulted juvenile tail-feathers and innermost secondaries andoften a few brown feathers on crown and much-worn juvenile body-plumage and central tail-feathers are moultedJuly-Oct. but not rest of tail nor wing-feathers nor summer.—A complete moult takes place
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbirds, bookyear1920
