A White-rumped Sandpiper at Napatree Point. The white eyebrow, bill length and wings projecting past the tail help to distinguish it from similar peeps. The white rump is only visible in flight.
see for relative sizes of peers http://www.inaturalist.org/observations/701204 In the 2nd photo, the WRSP is on the right. I am not sure about the bird on the left. ID points - White-rumped relative to Least and Western SP. Length of legs and light streaking on flanks and white rump eliminate Baird's SP. Extension of wings tips beyond tail tip, lifting over back and long elliptical shape.
see for relative sizes of peers http://www.inaturalist.org/observations/701204 In the 2nd photo, the WRSP is on the right. I am not sure about the bird on the left. ID points - White-rumped relative to Least and Western SP. Length of legs and light streaking on flanks and white rump eliminate Baird's SP. Extension of wings tips beyond tail tip, lifting over back and long elliptical shape.