RTH 1964 C. fuscicollis 29 June Barrow, Alaska All birds - not today (740-170) were checked. ♂ #12 present - no other in study area see - heard in display 30 June Nest check: all our nests remaining - when 3+7 we checked lakes - ♂#9 was gone 1 chase involving 5 birds (flush 14 + 1 settled ♂ probably) - chasing appears to involve Ne tundra - where my leader was. ♂#10 began a chase 2 indiv. members on ground - before resuming aerial chase. 29 June Specimen account - all collected at N.B.R. east 1 magnetic station FAP 64-32 - chased tiger and glidatory. maclean 24Y RT H 2411 } ] 2 for flush 75 HEC-5665 - ♂ - T=7m - 39.2 - chased by another - pinned side by side to chase. HEC 5663 - ♂ - T=9 m - 39.9 g - display on ground 5764 ♂ T=7m 39.2g - received RT H . 2411 - term indiv. may have been from flush 14.