White-bellied Storm-Petrel vs New Zealand Storm-Petrel

In short

The White-bellied Storm-Petrel and New Zealand Storm-Petrel can be challenging to distinguish, but key differences in plumage and behavior can help. The White-bellied Storm-Petrel typically shows a more uniform white belly, while the New Zealand Storm-Petrel often has a more mottled or streaked appearance. Observing flight patterns and habitat preferences may also aid in identification.

Identification tips

1. Look for a uniform white belly to identify the White-bellied Storm-Petrel. 2. Note any mottling or streaking on the belly for the New Zealand Storm-Petrel. 3. Consider observing flight patterns and habitat preferences if plumage is not conclusive.

Plumage

White-bellied Storm-Petrel generally has a uniform white belly, whereas the New Zealand Storm-Petrel often displays a mottled or streaked belly.