The Descent of Man: And Selection in Relation to Sex, เล่มที่ 2

acquired adult female adult male Africa allied American appear Argus pheasant Audubon beak beard beauty Birds of India black grouse blue Blyth body breeding season bright colors British Birds charm common common pheasant conspicuously colored courtship crest curious deer developed differ in color distinct doubt fact feathers fighting fishes genus Gould habits hair head Hist horns ibid Ibis India inheritance instance Jerdon kinds latter less likewise Lubbock Malay Archipelago male birds mammals manner marked marriage modified moult musical natural selection Naturalist nearly nests observed ocelli offspring orna ornaments pair peacock plumage plumes possess probable Proc progenitors Quadrumana quadrupeds races red grouse remarks resemble the adult SAN DIEGO savages seen sexes sexual selection skin sometimes South America species spots stripes tail tail-coverts tail-feathers teeth tints tion Tragopan transmitted tribe tusks upper various vocal organs wild turkey wing-feathers wings women young Zoolog