ML642414539

觀察細節

Small storm-petrel with white rump. Usually shows no dark dividing line on center of rump. White rump longer than length of dark tail extending beyond rump. White of rump often wraps around sides and onto underside of rump area. Tail has a shallow notch. Wings more rounded than Leach's S-P. Overall, darker plumaged with less contrasty carpal bar.