Scarlet Ibis vs Straw-necked Ibis

Eudocimus ruber compared with Threskiornis spinicollis

Side-by-Side Comparison

Attribute Scarlet Ibis Straw-necked Ibis
Scientific Name Eudocimus ruber Threskiornis spinicollis
Order Pelecaniformes Pelecaniformes
Family Threskiornithidae Threskiornithidae
Conservation Status Least Concern Least Concern
Length — —
Wingspan 52.1 cm (20.5 in) 72.9 cm (28.7 in)
Weight 778.75 g (27.47 oz) 1340.0 g (47.27 oz)
Diet -- --
Clutch Size 1-3 2-5
Population Trend — —

Habitat Comparison

Shared Habitats

Scarlet Ibis only

None

Straw-necked Ibis only

Conservation Status

Least Concern

Scarlet Ibis

Least Concern

Straw-necked Ibis

About These Birds

Scarlet Ibis

The Scarlet Ibis (Eudocimus ruber) is one of the most brilliantly colored birds in the Americas, celebrated for its intense scarlet plumage that covers virtually the entire body. It belongs to the family Threskiornithidae and is closely related to the American White Ibis, with which it hybridizes freely in areas of range overlap in Trinidad and Venezuela. Adults measure approximately 55–63 cm in length and weigh 650–900 grams. The long, strongly decurved reddish bill, black wingtips, and bright red legs …

Straw-necked Ibis

59–76 cm. White with black neck bristles; bare dark head; yellowish bill. Endemic to Australia in grasslands, pastures, and inland wetlands. Nomadic; follows rainfall across the continent. Feeds on insects and invertebrates in dry grassland. Often seen in mixed flocks with Australian Ibis.

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