Guadalupe murrelet Synthliboramphus hypoleucus

Small black-and-white diving seabird, unlikely to be seen from land. Usually found as singles or pairs, well offshore, and not usually associating with other seabirds. Like most small alcids, dives when alarmed or takes off and flies straight away from the boat. Very similar to Scripps’s Murrelet (the two were once lumped as Xantus’s Murrelet), but white in face more extensive, such that eye stands out in a white area rather than merging into the black cap. Underwings bright white overall, like Scripps’s but unlike dusky underwings of Craveri’s Murrelet.