Hawaiian/Galapagos Petrel article

An article on Dark-rumped Petrel identification in North American Birds by Peter Pyle, Daniel L. Webster, and Robin W. Baird appears online.

"Notes on petrels of the Dark-rumped Petrel complex (Pterodroma phaeopygia/sandwichensis) in Hawaiian waters" appears in the Volume 65 (2011), No. 2 issue of North American Birds.

Interestingly, the authors present 2 birds from Hawaii that appear to be Galapagos Petrels. I couldn't determine whether this means these two birds really were from the Galapagos, or whether there is more variation in the appearance of Hawaiian Petrel than previously thought.

Birds appearing off the West Coast of North America, peaking about the 10th of August, have thought to have been Hawaiian Petrels, based on descriptions and photos. The Hawaiian Petrel has a very small population. Perhaps we're better off using the pre-split name, Dark-rumped Petrel, until the identification criteria and exact ranges are more positively defined.