January 1953 4 Erolia bairdii June 15 Point Barrow, Alaska. Before the $, exposing his right side and rear right quarter toward her. The tail was down, spread, and seemed to be held slightly to the right. The back seemed to also be a part of the display for the left wing was raised, but not unfolded, in such a manner as to expose the scapulars and humerus. The left wing was raised about 1/2 wh. It seemed also that the right one dropped toward the ground to complement the position of the tail. The display lasted perhaps 5 seconds, and was repeated once. As Thompson approached, the $ assumed an alert stance and ran off about 10' in stages. When the $ was shot the $ flew off. I have used in this description the terms $ and $ merely to designate the birds in their respective parts. It was impossible, of course to determine the sexes, except in the bird collected, which turned out to be a $. June 16 This species seemed to be about as frequently occurring in Barrow #3 region as near the base. July 1 Nest near H.A.C.S. road beyond dump, 4 eggs, $ flushed when weasel passed 6' away. July 7 Nest on beach of Elson lagoon among scraps of driftwood, about 50' from water, on low- gravel strip, contained 4 eggs being incubated.