tringa stagnatilis. marsh sandpiper walking on swamp.

marsh tringa sandpiper water nature stagnatilis wildlife colorful swamp wader wild lake birdwatching ornithology birds beautiful animal shore plumage scolopacidae common beak birding color conservation spotted environment shorebird spring spottedredshank observe sanctuary coast watch mud charadriiformes aves bird river redshank avian eco erythropus nonbreeding sea ecology background breeding