Great Skua vs Anhinga

In short

The Great Skua and Anhinga are vastly different in appearance and habitat. The Great Skua is a robust seabird with a powerful build, while the Anhinga is a slender, snake-like waterbird. Their distinct habitats and behaviors make them easy to differentiate in the field.

Identification tips

• Location: Look for Great Skuas at sea or coastal areas; Anhingas are found in freshwater habitats.
• Flight Style: Great Skuas have powerful, direct flight; Anhingas soar with wings held flat and neck extended.
• Plumage: Note the Great Skua's brown plumage with white wing flashes versus the Anhinga's glossy black with silver streaks.
• Behavior: Observe the Anhinga's unique swimming style with only the neck above water.

Size

The Great Skua is larger and bulkier, with a wingspan of about 125-140 cm, whereas the Anhinga is more slender with a wingspan of approximately 114 cm.

Plumage

The Great Skua has a mottled brown plumage with white wing flashes visible in flight. In contrast, the Anhinga has a glossy black body with silver streaks on the wings and a long, snake-like neck.

Behaviour

Great Skuas are aggressive seabirds known for harassing other birds for food, while Anhingas are often seen swimming with only their neck above water, earning them the nickname 'snake bird.'

Habitat

Great Skuas inhabit open seas and coastal areas, often nesting on islands. Anhingas are found in freshwater habitats like lakes and rivers, often perched on branches overhanging water.

Voice

Great Skuas are known for their harsh, croaking calls, while Anhingas are generally silent but may produce low grunts.