The white-breasted sea eagle is widely distributed but nowhere in the Philippines is it abundant. In adult plumage it is easily identified by its white under parts. Its nest consists of a mass of sticks and is usually supported by the branches of some large tree. Islets on which there are but a few trees are in particular favor with this species. The eggs are usually spheroidal and white with a few faint markings of reddish brown. "Common along the seashore. Frequently seen perching on the fish pens of the natives, where it secures abundant food." (Bourns and Worcester MS.) Genus HALIASTUR Selby, 1840. Bill moderate, compressed, with a long overhanging tip; culmen well curved, cutting edge slightly sinuate; wings long, extending beyond tip of tail; inner webs of primaries abruptly cut; tail nearly square; tarsus feathered in front for about half its length, the lower half with large transverse plates, its sides and back with variously shaped scales; claws strong and well curved. 191. HALIASTUR INTERMEDIUS Gurney. MALAYAN BRAHMINY KITE. Haliastur intermedius Gurney, Ibis (1865), 28; Sharpe, Cat. Birds Brit. Mus. (1874), 1, 314; Hand-List (1899), 1, 268; Oates, Cat. Birds' Eggs (1902), 2, 282; McGregor and Worcester, Hand-List (1906), 43. La-uin', Lubang, Manila; ba-nog', Bohol, Ticao. Bantayan (McGregor); Basilan (Bourns & Worcester, McGregor); Bohol (Steere Exp., McGregor); Bongao (Everett); Buluan off Mindanao (Mearns); Calamianes (Bourns & Worcester); Catanduanes (Whitehead); Cebu (Murray, Everett, Bourns & Worcester, McGregor); Cuyo (McGregor); Guimaras (Meyer, Steere Exp.); Leyte (Everett); Lubang (McGregor); Luzon (Meyer, Everett, Bourns & Worcester, Whitehead, McGregor, Seale); Maestre de Campo (McGregor & Worcester); Malanipa (Murray); Marinduque (Steere Exp.); Masbate (Bourns & Worcester, McGregor); Mindanao (Everett, Murray, Goodfellow); Mindoro (Bourns & Worcester, McGregor, Porter); Negros (Everett, Bourns & Worcester, Keay); Panay (Steere Exp., Bourns & Worcester); Romblon (Bourns & Worcester); Samar (Steere Exp., Bourns & Worcester); Sibuyan (Bourns & Worcester, McGregor); Siquijor (Steere Exp., Celestino); Sulu (Guillemard, Steere Exp., Bourns & Worcester); Tablas (Bourns & Worcester); Tawi Tawi (Bourns & Worcester); Ticao (McGregor). Celebes; Malay Peninsula; Greater Sunda Islands; Indo-Chinese Provinces. Adult.--Entire head and neck, chin, throat, and breast white, with narrow black shaft-lines; rest of the plumage rich chestnut, the shafts blackish, the chestnut most intense on mantle and back; primaries black with light rufous bases; axillars and wing-lining chestnut; tail chestnut, tipped with gray. Length of male, 470; wing, 410; tail, 210; culmen from base, 35; tarsus, 53.