Six species of the Hawk tribe are peculiar to Celebes; three of these are very distinct from allied birds which range over all India to Java and Borneo, and which thus seem to be suddenly changed on entering Celebes. Another (Accipiter trinotatus) is a beautiful hawk, with elegant rows of large round white spots on the tail, rendering it very conspicuous and quite different from any other known bird of the family. Three owls are also peculiar;and one, a barn owl (Strix rosenbergii), is very much larger and stronger than its ally Strix javanica, which ranges from India through all the islands as far as Lombock.
Of the ten Parrots found in Celebes, eight are peculiar. Among them are two species of the singular raquet-tailed parrots forming the genus Prioniturus, and which are characterised by possessing two long spoon-shaped feathers in the tail. Two allied species are found in the adjacent island of Mindanao, one of the Philippines, and this form of tail is found in no other parrots in the whole world. A small species of Lorikeet (Trichoglossus flavoviridis) seems to have its nearest ally in Australia.
The three Woodpeckers which inhabit the island are all peculiar, and are allied to species found in Java and Borneo, although very different from them all.
Among the three peculiar Cuckoos, two are very remarkable.
Phoenicophaus callirhynchus is the largest and handsomest species of its genus, and is distinguished by the three colours of its beak, bright yellow, red, and black. Eudynamis melanorynchus differs from all its allies in having a jet-black bill, whereas the other species of the genus always have it green, yellow, or reddish.
The Celebes Roller (Coracias temmincki) is an interesting example of one species of a genus being cut off from the rest. There are species of Coracias in Europe, Asia, and Africa, but none in the Malay peninsula, Sumatra, Java, or Borneo. The present species seems therefore quite out of place; and what is still more curious is the fact that it is not at all like any of the Asiatic species, but seems more to resemble those of Africa.
In the next family, the Bee-eaters, is another equally isolated bird, Meropogon forsteni, which combines the characters of African and Indian Bee-eaters, and whose only near ally, Meropogon breweri, was discovered by M. Du Chaillu in West Africa!
The two Celebes Hornbills have no close allies in those which abound in the surrounding countries. The only Thrush, Geocichla erythronota, is most nearly allied to a species peculiar to Timor. Two of the Flycatchers are closely allied to Indian species, which are not found in the Malay islands. Two genera somewhat allied to the Magpies (Streptocitta and Charitornis), but whose affinities are so doubtful that Professor Schlegel places them among the Starlings, are entirely confined to Celebes. They are beautiful long-tailed birds, with black and white plumage, and with the feathers of the head somewhat rigid and scale-like.
Doubtfully allied to the Starlings are two other very isolated and beautiful birds. One, Enodes erythrophrys, has ashy and yellow plumage, but is ornamented with broad stripes of orange-red above the eyes. The other, Basilornis celebensis, is a blue-black bird with a white patch on each side of the breast, and the head ornamented with a beautiful compressed scaly crest of feathers, resembling in form that of the well-known Cock-of-the-rock of South America. The only ally to this bird is found in Ceram, and has the feathers of the crest elongated upwards into quite a different form.
A still more curious bird is the Scissirostrum pagei, which although it is at present classed in the Starling family, differs from all other species in the form of the bill and nostrils, and seems most nearly allied in its general structure to the Ox-peckers (Buphaga) of tropical Africa, next to which the celebrated ornithologist Prince Bonaparte finally placed it. It is almost entirely of a slatey colour, with yellow bill and feet, but the feathers of the rump and upper tail-coverts each terminate in a rigid, glossy pencil or tuft of a vivid crimson.
These pretty little birds take the place of the metallic-green starlings of the genus Calornis, which are found in most other islands of the Archipelago, but which are absent from Celebes.
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. Two others, Carpophaga forsteni and Phlaegenas tristigmata, most resemble Philippine island species; and Carpophaga radiata belongs to a New Guinea group. Lastly, in the Gallinaceous tribe, the curious helmeted Maleo (Megacephalon rubripes) is quite isolated, having its nearest (but still distant) allies in the Brush-turkeys of Australia and New Guinea.
Judging, therefore, by the opinions of the eminent naturalists who have described and classified its birds, we find that many of the species have no near allies whatsoever in the countries which surround Celebes, but are either quite isolated, or indicate relations with such distant regions as New Guinea, Australia, India, or Africa. Other cases of similar remote affinities between the productions of distant countries no doubt exist, but in no spot upon the globe that I am yet acquainted with, do so many of them occur together, or do they form so decided a feature in the natural history of the country.