P. De Benedictis 1965 Calidris pusillus 22 June Barrow, Alaska - this was the noisiest of the shorebirds seen today, but most vocalization was the trill given on ground displays. The flight call seems to be an abrupt "chink chink" and the aerial song is deeper than any of the ground calls. A ma?nest cup display was on the crest of a low polygon ridge about 2-3 feet from a ?s. It flew to the spot and landed with a wing-up then went into the posture : [sketch of bird] and called "tr-tr-tr..." continuously. It did not move and the ? did not appear to be interested; after about 5 seconds the ? got up and began to feed. Several birds saw seemed concerned about my presence but I could find no nests. One feeding, apparently watching me with one eye at the ground with [illegible] when it ran into a wire about 1/4" off the ground tripped. 23 June Saw 2 ?s in pursuit of a ?, all three landed in a tufted patch of grass (a old herm?ing nest) and the 2?s then got up and flew away, giving the motor boat. When Sampson probe they do so in very soft substrates, preferring to peck when the soil is more firm.