I saw it catch and with much effort swallow a small frog, after which it lost all interest in fishing. It walked off a few steps and stood on one foot, all humped up and with eyes closed; quite a contrast to the usual alert sandpiper pose.
Behavior.—Audubon (1840) writes:
The flight of these sandpipers is rapid and regular. They move compactly, and often when about to alight, or after being disturbed, incline their bodies to either side, showing alternately the upper and lower parts. On foot they move more like curlews than tringas, they being as it were more sedate in their deportment. At times, on the approach of a person, they squat on the ground, very much in the manner of the Esquimaux curlew, Numenius borealis; and their flesh is as delicate as that of the species just named.
Dr. Arthur A. Allen (1913), after referring to the companionship and resemblance between stilt sandpipers and lesser yellow-legs, says:
In their habits, however, the two species were quite different. The yellow-legs were always rangy birds and covered a great deal of ground while feeding. Even when resting they were conspicuous by the nervous jerking of the head and neck. In flight they usually formed fairly compact flocks but scattered upon alighting. The stilt sandpipers, on the other hand, were quiet birds and went about their search for food very systematically, gleaning everything in their way. They frequently fed in a space a few yards square for over an hour at a time. When at rest they showed none of the nervous traits of the yellow-legs, being much more sedate, neither jerking the head nor tilting the tail. In flight they were quite similar to the yellow-legs, but as soon as they alighted they bunched and frequently the whole flock fed with their bodies nearly touching. Like the yellow-legs, the stilt sandpipers were seldom seen upon the exposed mud but preferred wading where the water was from 1 to 3 inches in depth, so that the entire head and neck frequently disappeared beneath the surface of the water while feeding. The notes of the two birds, though similar in form, were wholly unlike in quality, that of the stilt sandpiper being mellower and lower in pitch.
Coues (1878) at first mistook birds of this species for dowitchers and did not recognize them until he had them in his hands. He says:
They gathered in the same compact groups, waded about in the same sedate, preoccupied manner, fed with the same motion of the head, probing obliquely in shallow water with the head submerged, were equally oblivious of my approach, and when wounded swam with equal facility. The close structural resemblances of the two species are evidently reflected in their general economy.
Mr. Nichols says in his notes:
On alighting the stilt sandpiper sometimes lifts its wings halfway for an instant, a mannerism characteristic of the tattler group, which it would seem to have acquired from its associate, the yellow-legs.