White-chinned Petrel vs Parkinson's Petrel

In short

The White-chinned Petrel is distinguished by its typically white chin and large, pale bill, while the Parkinson's Petrel lacks the white chin and has a uniformly dark plumage. Both species belong to the Procellaria genus and are similar in size and shape, making the white chin a key field mark.

Identification tips

1. Look for the white chin on the White-chinned Petrel, absent in Parkinson's Petrel. 2. Note the pale bill of the White-chinned Petrel compared to the uniformly dark appearance of Parkinson's Petrel. 3. Observe behavior: both species may follow ships, but the White-chinned Petrel is more widespread across the Southern Ocean.

Size

Both species are similar in size, typical of the Procellaria genus.

Plumage

The White-chinned Petrel has a distinctive white chin and a large, pale bill, whereas the Parkinson's Petrel is uniformly dark without the white chin.

Behaviour

Both species often follow ships offshore and feed in groups, showing similar behavior patterns.

Habitat

White-chinned Petrels breed on subantarctic islands and disperse widely across the Southern Ocean, while Parkinson's Petrels are more restricted to the waters near New Zealand.