grazina-de-bico-curto vs fura-buxo-de-cara-cinza

To distinguish between the Kerguelen Petrel and the Great-winged Petrel, focus on structural differences: the Kerguelen Petrel has a shorter bill and a more compact body, while the Great-winged Petrel is larger with longer wings. Plumage differences are subtle and less reliable in the field.

1. Structure: Look for the shorter bill and more compact body of the Kerguelen Petrel versus the larger size and longer wings of the Great-winged Petrel.

The Great-winged Petrel is larger overall with longer wings compared to the more compact Kerguelen Petrel.