A Field Guide to the Nests, Eggs, and Nestlings of North American Birds
Stephen Greene Press, 1984 - Birds - 416 pages
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adults Altricial and downy areas bark Begins early Begins late bill birds blotches blue branch Breeding season brooded brown buff building built cavity clutch colonies color concentrated crown dark dark brown dead deep early June edge Eggs Eggs laid elliptical feathers female fibers grasses gray greenish ground hair hatching head hole hollow Incubation intervals islands larger end leave nest light lined mainly male markings moss mottled Mouth Nestling period occasionally olive oval pale paler parents pattern plant Precocial and downy purple range rarely reddish-brown rock rootlets sexes shallow short subelliptical shrub side similar Single-brooded Skin slightly glossy Smooth Smooth and slightly sometimes sparse species speckled spotted stems streak subelliptical thick tinted tips tree twigs usually variable varies vegetation Warbler weed weeks wings woodland yellow Young leave Young tended