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Side-by-Side Comparison

Attribute	African Openbill	Greater Adjutant
Scientific Name	Anastomus lamelligerus	Leptoptilos dubius
Order	Ciconiiformes	Ciconiiformes
Family	Ciconiidae	Ciconiidae
Conservation Status	Least Concern	Near Threatened
Length	—	—
Wingspan	78.8 cm (31.0 in)	152.3 cm (60.0 in)
Weight	1014.0 g (35.77 oz)	9050.0 g (319.23 oz)
Diet	--	--
Clutch Size	3-5	2-4
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🌲 Forest 🌾 Grassland 🌿 Wetland

African Openbill only

None

Greater Adjutant only

None

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Conservation Status

Least Concern

African Openbill

Near Threatened

Greater Adjutant

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About These Birds

African Openbill

72–90 cm. All-black plumage with gloss; distinctive large bill with a gap between mandibles adapted for extracting apple snails. Resident across sub-Saharan Africa and Madagascar in wetlands, rivers, and rice paddies. Feeds almost exclusively on molluscs. Colonial breeder in trees near water.

Greater Adjutant

145–150 cm, wingspan 210–250 cm. Enormous; naked red head; huge ivory bill; large pendant neck pouch. Endangered; fewer than 1,000 birds remain in South and Southeast Asia. Breeds in Assam (India) and Cambodia. Feeds on fish, carrion, and small animals in wetlands and rubbish dumps.

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