A commonly seen spring migrant that is noted almost daily from mid-May to early June. This species is never as common during other portions of the year. Spring birds occasionally linger to (or arrive in) late June with scattered arrivals throughout the summer into July and early August, when it is rarest. Fall migrants may begin to appear during the second half of August, though they do not typically appear until September and become regular after September 20th in most years with migrants regularly noted through mid-October. This species is likely to persist around the islands into late fall and winter when ice-free waters remain.