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Woodpecker, selection of a mate by the female. Woodpeckers, tapping of; colours and nidification of the; characters of young. Woolner, Mr., observations on the ear in man. Wormald, Mr., on the coloration of Hypopyra. Wounds, healing of. Wren, young of the. Wright, C.A., on the young of Orocetes and Petrocincla.
Oriolus melanocephalus, coloration of the sexes in. Ornaments, prevalence of similar; of male birds; fondness of savages for. Ornamental characters, equal transmission of, to both sexes, in mammals; of monkeys. Ornithoptera croesus. Ornithorhynchus, reptilian tendency of; spur of the male. Orocetes erythrogastra, young of. Orrony, Grotto of. Orsodacna atra, difference of colour in the sexes of.
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