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Gray's specimen. Another of the Gallinæ of Ceylon, remarkable for the delicate pencillings of its plumage, as well as for the peculiarity of the double spur, from which it has acquired its trivial name, is the Galloperdix bicalcaratus, of which a figure is given from a drawing by Mr. Gould.
In Galloperdix it is usual for the males to have two spurs, and for the females to have only one on each leg. Like most other secondary sexual characters, the spurs are highly variable, both in number and development, in the same species. Various birds have spurs on their wings.
Gallinaceae, frequency of polygamous habits and of sexual differences in the; love-gestures of; decomposed feathers in; stripes of young; comparative sexual differences between the species of; plumage of. Gallinaceous birds, weapons of the male; racket-shaped feathers on the heads of. Gallinula chloropus, pugnacity of the male. Galloperdix, spurs of; development of spurs in the female.
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