Hose's broadbill

Hose's broadbill (Calyptomena hosii) is a species of bird in the family Calyptomenidae. It was described by the British naturalist Richard Bowdler Sharpe in 1892 and is named after the British zoologist Charles Hose, who collected the holotype of the species. It is 19–21 cm (7.5–8.3 in) long, with females weighing 92 g (3.2 oz) on average and males weighing 102–115 g (3.6–4.1 oz). Males are bright green and have conspicuous black spots on the wings, black markings on the head, blue underparts, black flight feathers, and a large green tuft covering most of the bill. Females have smaller forehead tufts, lime-green underparts with sky blue instead of azure blue on the undertail coverts, and lack black markings on the head, except for a black spot in front of the eye.

The species is endemic to montane regions in north, central, and southeastern Borneo, where it mostly occurs in forests at elevations of 600–1,220 m (1,970–4,000 ft). Omnivorous, it mainly feeds on fruit like figs and berries, supplementing its diet with insects and leaf buds. It is mainly seen alone or in pairs but can form flocks of up to 6–8 birds near fruiting trees. Breeding occurs from April to October, with clutches of 2–4 eggs being laid in delicate hanging nests. It is classified as being near-threatened by the International Union for Conservation of Nature due to a moderately rapid decline in its population caused by habitat destruction.