Fiordland Penguin vs Snares Penguin

In short

The most reliable field mark to distinguish Fiordland Penguin from Snares Penguin is the shape of the supercilium. Fiordland Penguins have a more prominent and bushy yellow supercilium, while Snares Penguins have a thinner, more streamlined yellow stripe. Both species are similar in size and structure, making plumage details crucial for identification.

Identification tips

1. Look for the shape and bushiness of the yellow supercilium: bushier in Fiordland, streamlined in Snares. 2. Consider location: Fiordland Penguins are on New Zealand's mainland, Snares Penguins on the Snares Islands. 3. Use binoculars to observe the supercilium shape closely, as size and behavior are not reliable.

Size

Both species are similar in size, typical of the Eudyptes genus, and size alone is not a reliable distinguishing feature.

Plumage

Fiordland Penguins have a bushier yellow supercilium that extends above the eye, while Snares Penguins have a thinner, more streamlined yellow stripe. Both have similar black and white body plumage.

Behaviour

Behavioral differences are subtle and not typically useful for field identification.

Habitat

Fiordland Penguins are found on the southwestern coast of New Zealand's South Island, while Snares Penguins are restricted to the Snares Islands. Habitat overlap is unlikely.

Voice

Vocalizations are not well-documented as distinguishing features between these two species.