Abundance: Common Season: Year round Habitat: Shore or mudflat; Open water; Seen most often in flight Slide #29.15.42 - Adult, alternate (Jan 14). Photograph © James R. Gallagher. Original available from the Sea and Sage Audubon Library of Nature. Slide #29.15.16 - Adult, basic (Feb 1). Photograph © James R. Gallagher. Original available from the Sea and Sage Audubon Library of Nature. Slide #29.15.51 - 1st year, basic (Dec). Photograph © James R. Gallagher. Original available from the Sea and Sage Audubon Library of Nature. Slide #29.15.48 - 2nd year, basic (Aug). Photograph © James R. Gallagher. Original available from the Sea and Sage Audubon Library of Nature.