Storm Petrel
There are three species of storm petrels on the Galapagos, the wedge-rumped, band-rumped and white-vented storm petrels, all dark with a white rump. They are the smallest among sea birds, about the size of a swallow. The wedge-rumped and band-rumped storm petrels breed in huge colonies on Genevosa Island. Although they exist in the thousands, little about the species are known.