Brown Noddy vs Aleutian Tern

Anous stolidus compared with Onychoprion aleuticus

Side-by-Side Comparison

Attribute Brown Noddy Aleutian Tern
Scientific Name Anous stolidus Onychoprion aleuticus
Order Charadriiformes Charadriiformes
Family Laridae Laridae
Conservation Status Least Concern Vulnerable
Length — —
Wingspan 53.1 cm (20.9 in) 52.4 cm (20.6 in)
Weight 184.66666666666666 g (6.51 oz) 104.88 g (3.70 oz)
Diet -- --
Clutch Size 1 1-4
Population Trend — —

Habitat Comparison

Shared Habitats

Brown Noddy only

None

Aleutian Tern only

Conservation Status

Least Concern

Brown Noddy

Vulnerable

Aleutian Tern

About These Birds

Brown Noddy

Brown Noddy: 38–45 cm, wingspan 75–86 cm, chocolate-brown tropical tern with a white cap fading to grey on the forehead and a wedge-shaped tail. Highly abundant colonial seabird nesting on oceanic islands and coral atolls throughout tropical and subtropical oceans. Plunge-dives for small fish and invertebrates. Long-lived. Partly migratory.

Aleutian Tern

Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.

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