Antarctic Shag vs Flightless Cormorant

Leucocarbo bransfieldensis compared with Nannopterum harrisi

Side-by-Side Comparison

Attribute Antarctic Shag Flightless Cormorant
Scientific Name Leucocarbo bransfieldensis Nannopterum harrisi
Order Suliformes Suliformes
Family Phalacrocoracidae Phalacrocoracidae
Conservation Status Not Evaluated Vulnerable
Length — —
Wingspan — 37.8 cm (14.9 in)
Weight 2780.0 g (98.06 oz) 3241.6666666666665 g (114.35 oz)
Diet -- --
Clutch Size 2-3 1-4
Population Trend — —

Habitat Comparison

Shared Habitats

Antarctic Shag only

None

Flightless Cormorant only

None

Conservation Status

Not Evaluated

Antarctic Shag

Vulnerable

Flightless Cormorant

About These Birds

Antarctic Shag

63–72 cm. Black above; white below; caruncles reduced compared to related shags. Breeds on the Antarctic Peninsula and associated islands. Feeds on fish in cold Antarctic coastal waters. One of the southernmost-breeding cormorants; largely sedentary around breeding colonies.

Flightless Cormorant

89–100 cm. Dark brown; vestigial wings unsuited for flight; bright turquoise eyes. Endemic to Galapagos Islands (Fernandina and Isabela). Only flightless cormorant; Vulnerable with about 1,000 pairs. Feeds on fish and octopus by diving near shore; no natural land predators historically.

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