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Arabs, fertility of crosses with other races; gashing of cheeks and temples among the. Arachnida. Arakhan, artificial widening of the forehead by the natives of. Arboricola, young of. Archeopteryx. Arctiidae, coloration of the. Ardea asha, rufescens, and coerulea, change of colour in. Ardea coerulea, breeding in immature plumage. Ardea gularis, change of plumage in.
Orsodacna ruficollis. Orthoptera, metamorphosis of; stridulating apparatus of; colours of; rudimentary stridulating organs in female; stridulation of the, and Homoptera, discussed. Ortygornis gularis, pugnacity of the male. Oryctes, stridulation of; sexual differences in the stridulant organs of. Oryx leucoryx, use of the horns of. Osphranter rufus, sexual difference in the colour of.
They go in flocks, feeding upon grain and fruits, often frequenting dead trees, in holes of which they build their nests; and they cling to the trunks as easily as woodpeckers or creepers. Out of eighteen Pigeons found in Celebes, eleven are peculiar to it. Two of them, Ptilonopus gularis and Turacaena menadensis, have their nearest allies in Timor.
I infer that this would be the case, from the analogy of many other birds, which are dark whilst young, and when adult are white; and more especially from the case of the Ardea gularis, the colours of which are the reverse of those of A. asha, for the young are dark-coloured and the adults white, the young having retained a former state of plumage.
Jerdon, Dr., on birds dreaming; on the pugnacity of the male bulbul; on the pugnacity of the male Ortygornis gularis; on the spurs of Galloperdix; on the habits of Lobivanellus; on the spoonbill; on the drumming of the Kalij-pheasant; on Indian bustards; on Otis bengalensis; on the ear-tufts of Sypheotides auritus; on the double moults of certain birds; on the moulting of the honeysuckers; on the moulting of bustards, plovers, and drongos; on the spring change of colour in some finches; on display in male birds; on the display of the under-tail coverts by the male bulbul; on the Indian honey-buzzard; on sexual differences in the colour of the eyes of hornbills; on the markings of the Tragopan pheasant; on the nidification of the Orioles; on the nidification of the hornbills; on the Sultan yellow-tit; on Palaeornis javanicus; on the immature plumage of birds; on representative species of birds; on the habits of Turnix; on the continued increase of beauty of the peacock; on coloration in the genus Palaeornis.
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