Threskiornis is a genus of , wading birds of the family Threskiornithidae. They occur in the warmer parts of the Old World in southern Asia, Australasia and sub-Saharan Africa. They are colonial breeders, which build a stick nest in a tree or bush and lay 2-4 eggs. They occur in marshy wetlands and feed on various fish, frogs, crustaceans and insects. Adult Threskiornis ibises are typically 75cm long and have white body plumage. The bald head, neck and legs are black. The bill is thick and curved. Sexes are similar, but juveniles have whiter necks duller plumage. The Straw-necked Ibis differs from the other species in having dark upperparts, and is some times placed in the separate genus Carphibis (Jameson, 1835)as Carphibis spinicollis.
|wingspan min.:||112||cm||wingspan max.:||124||cm|
|size min.:||65||cm||size max.:||89||cm|
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Over 70% of the species’s population in Madagascar resides outside protected areas. It is threatened in particular by the collection of eggs, trapping of adults11 and taking of nestlings for food with drastic declines observed over widespread areas. It is fearless whilst nesting and roosting, making it an easy target for hunters. Existing legislation on hunting is weak and ineffective. The species is also threatened by habitat loss and degradation, with important habitats affected by pollution, sedimentation and the encroachment of alluvial sands. Increased sedimentation results from increases in soil erosion caused by slash and burn cultivation, and these effects are most prevalent in southern Madagascar where the species’s population is low. In addition, mangroves are threatened with destruction for charcoal production. It is possible that the species is in competition for food with egret species, such as the Dimorphic Egret Egretta dimorpha.