American White Ibis vs Buff-necked Ibis

Eudocimus albus compared with Theristicus caudatus

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Side-by-Side Comparison

Attribute American White Ibis Buff-necked Ibis
Scientific Name Eudocimus albus Theristicus caudatus
Order Pelecaniformes Pelecaniformes
Family Threskiornithidae Threskiornithidae
Conservation Status Least Concern Least Concern
Length
Wingspan 56.0 cm (22.0 in) 78.6 cm (30.9 in)
Weight 894.1666666666666 g (31.54 oz) 1708.0 g (60.25 oz)
Diet -- --
Clutch Size 2-3 1-3
Population Trend
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Habitat Comparison

Shared Habitats

American White Ibis only

Buff-necked Ibis only

None

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Conservation Status

Least Concern

American White Ibis

Least Concern

Buff-necked Ibis

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About These Birds

American White Ibis

The American White Ibis (Eudocimus albus) is a medium-sized wading bird belonging to the family Threskiornithidae, immediately recognizable by its entirely white plumage contrasted with a vivid orange-red face, bill, and legs. Adults typically measure 56–71 cm in length with a wingspan of 91–107 cm, and weigh between 750 and 1,050 grams. The long, strongly decurved bill is the bird's most distinctive feature, perfectly adapted for probing soft substrates in search of prey. This species inhabits coastal marshes, mangrove swamps, …

Buff-necked Ibis

71–76 cm. White head and neck with rusty tone; black back; buff breast; bare yellow facial skin. Widespread in South America from Colombia and Venezuela south to Argentina in open savannas and grasslands. Feeds on invertebrates, lizards, and frogs. Common; often in pairs or small groups.

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