Holmes, R. 1964 29, C. fuscicollis 20 June Barrow, Alaska The display activity was low (but apparent) #1 now present - chasing 2 other birds (may have been 2♂? after 1 ♀ - but #1 returned to his area). #2 present + displaying. 3,4,7896, - not credited 5* not seen - 11+12 present + active. In evening, #11 displayed several times - little other activity. Most aerial displays now are hover displays - very few of the climbs & then immediate down-glide. Evidence at this point suggests that (1) The species is evidently polygamous - since ♂♂ give ritualized ground display to every ♀ and any ♂ - including those with a completed clutch + ♂♂ doing distraction display & for territory#1, which now contain 2 nests. (2) ♂♂ do not incubate nest and do not associate with the nest (i.e. species without brood patches; ♂ always feeding / or displaying - never showing decoy actions or other nest-associated activities - ♂♂ have stance on the fundra, suggesting a DPS - 'receptive' alert - ready to take chase at any time - The pattern & behavior is about the best method to separate the sexes in the field. (3) There is little if any