Holmes,R 1962 CroceThia alba 10june Barnas, Alaska Anoth (dark) individual was seen on the north slope of bundle ridge - in the gravel with Roda - The fleet least proximity of salt lagoon. 17 june On or No.1 Gasoline Bridge near Gasoline - no bird polygons - none displaying. 26 june 3 birds seen on the south side of The Beach Ridge - along the north west shore of No. Meadow lake There appeared to be a pair & a single 8 - all of which were involved in a chase - [as well as a ♂ Culex Solf] - all 4 birds flying erratically over the hundred foot over the lake. The Culex Sanctipia was giving The fourth note - The Sandgrouse [both 8's? - but at least one 8) was giving an aggressive chase note - which is a rattle - given at varying speeds - depending on the interest & the aggressive situation. This egg chase note [illegible] is usually uttered at a relatively slow tempo - 2 parts/sec. che-che-che- + when this is speeded up - the parts are slurred together giving an impression of the gurgling rattle of melanotus. The pattern 1 The two notes are nearly identical. That of melanotus is more bubbles & gurgles while that of alba is more "wiry" & "strained". Both are louder chattered.