Chatham Islands Petrel vs Westland Petrel
Pterodroma axillaris versus Procellaria westlandica
Play a quiz with Chatham Islands Petrel and Westland Petrel
Chatham Islands Petrel
Westland Petrel
In short
The Chatham Islands Petrel and Westland Petrel can be distinguished by their size and plumage. The Westland Petrel is larger and has a more uniform dark plumage, whereas the Chatham Islands Petrel is smaller with distinct lighter underparts.
Identification tips
Size: Westland Petrel is larger. Plumage: Look for the uniform dark plumage of the Westland Petrel compared to the lighter underparts of the Chatham Islands Petrel.
Size
The Westland Petrel is larger than the Chatham Islands Petrel.
Plumage
The Westland Petrel has a uniform dark plumage, while the Chatham Islands Petrel has lighter underparts.