LESSER & GREATER YELLOWLEGS, PARKER RIVER NATIONAL WILDLIFE REFUGE,PLUM ISLAND,MA, 8/26/18

   The Yellowlegs in these photos seem to be a mixture of Greater Yellowlegs and Lesser Yellowlegs, in breeding and nonbreeding plumage.  This is the time of year (August & September) when Yellowlegs molt from breeding to nonbreeding plumage.
   The Yellowlegs with the slightly longer and slightly upturned bills are most likely Greater Yellowlegs and the ones with shorter, straight bills are most likely Lesser Yellowlegs.  You can really only make this comparison when they are in profile.  The Yellowlegs with no or little barring on the flanks are probably in nonbreeding plumage, while the ones with more barring are probably in breeding plumage.
    The ID of which Yellowlegs is which is very subjective and I leave it up to the reader to decide.

OSPREY IN FLIGHT, PARKER RIVER NATIONAL WILDLIFE REFUGE,PLUM ISLAND,MA, 8/26/18

DOUBLE-CRESTED CORMORANTS, SNOWY EGRET & MANY OTHER BIRDS, PARKER RIVER NATIONAL WILDLIFE REFUGE, PLUM ISLAND,MA, 8/26/18

   The large dark birds in the foreground are Double-Crested Cormorants. The white bird on the right foreground is a Snowy Egret.  In the background are numerous shorebirds and on the middle foreground is an unidentified gull.

EASTERN KINGBIRD, PARKER RIVER NATIONAL WILDLIFE REFUGE,PLUM ISLAND,MA, 8/26/18

SONG SPARROW, PARKER RIVER NATIONAL WILDLIFE REFUGE,PLUM ISLAND,MA, 8/26/18

BREEDING MALE AMERICAN GOLDFINCH, PARKER RIVER NATIONAL WILDLIFE REFUGE,PLUM ISLAND,MA, 8/26/18

EASTERN KINGBIRD, PARKER RIVER NATIONAL WILDLIFE REFUGE,PLUM ISLAND,MA, 8/26/18