_Chenalopex aegyptiaca_, the "Egyptian Goose," found in Palestine and Africa, is rusty or buffish-grey, marked above with black, and with red, white, green, and black on the wing. The nape and collar are rufous; the breast shews a maroon patch, the bill is pink and black, the feet are pink. It has a loud, harsh cry, feeds on land, and lays rather small creamy eggs in cavities of rocks, on trees, or even among rushes. _C. jubata_, of Amazonia and Guiana, is grey, with greenish-black back, wings, and tail, ruddy mantle and belly, purplish-green wing-coverts, and white speculum. The sexes are alike in this genus and the next. In _Dendrocycna_, containing the Tree-Ducks, which occur mostly in the tropics, the main colour is chestnut or dusky-brown, with dark nape and black rump or belly; but the head may be lighter, the throat or wing-coverts varied with white, or the flanks barred with black and white. _D. viduata_, of the Ethiopian and Neotropical Regions, has the front of the head white; _D. autumnalis_, of Central America, and _D. discolor_, its greyer representative in northern South America, have red bills and whitish feet; _D. arborea_, of the Bahamas and Antilles, has strongly spotted lower parts, as has the larger _D. guttata_, of Mindanao, Celebes, New Guinea, and the Moluccas; _D. fulva_, of the Ethiopian, Neotropical, {130}and Indian Regions, has white upper and under tail-coverts; _D. javanica_, of the latter area only, has them chestnut above and fulvous white below; _D. arcuata_, ranging from the Malay Archipelago to Fiji, has the breast chestnut barred with black; _D. eytoni_, of Australia, which has strayed to New Zealand, has it yellowish-brown. These birds fly slowly and heavily, and perch regularly on trees, where they sway awkwardly about upon the branches; the note is a clear whistle or a chattering sound; the food consists mainly of fish and water-plants, sought at all times of day. In winter the flocks cause great damage to corn or rice near the lagoons and other waters they frequent. The nest, placed in hollow trees, stumps, long grass, or deserted habitations of other birds, contains from six to twelve white eggs.