Gadfly petrel

The short, sturdy bills of the 30 Pterodroma species in this group are adapted for soft prey taken at the surface; they have twisted intestines for digesting marine animals which have unusual biochemistries.

Their complex wing and face marking are probably for interspecific recognition.

These birds nest in colonies on islands and are pelagic when not breeding. One white egg is laid usually in a burrow or on open ground. They are nocturnal at the breeding colonies.

Some species are:

• Soft-plumaged Petrel[?] Pterodroma mollis
• Fea's Petrel[?] Pterodroma feae
• Zino's Petrel[?] Pterodroma madeira