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

acquired admire adult female adult male Africa American appears Argus pheasant Audubon beak beard beauty Birds of Australia Birds of India Birds of Paradise Blyth body breed breeding-season Brehm bright colors British Birds charm common common pheasant conspicuously colored courtship crest curious deer developed differences in color distinct doubt fact feathers fighting fishes genus Gould Günther habits hair head Hist horns ibid Ibis Indian bustard inheritance instance Jerdon kinds less likewise lower animals Lubbock Malay Archipelago male birds mammals manner modified moult natural selection nearly nests observed occurs ocelli offspring ornaments pair peacock plumage plumes Polyplectron possess probable Proc progenitors protection Quadrumana quadrupeds races remarks resemble savages season seen sexes sexual selection South America species spots stripes tail tail-feathers teeth tints tion Tragopan transmission transmitted tribe tusks upper variations various vocal organs wing-feathers wings winter women young Zoolog