J.P. Myers 1977 Journal Prudhoe Bay, N. Slope, Alaska 26 June (cont'd) but breeding in upland tundra by the west dock and to the west of the Pot River at least as far as Buffy Pingo (see map). Displaying intermittently, 7" in flight display, least by behavior all pairs are on nests - frequent duet/branch display. Pleviella squarrosa . Less Common than P. dominica, pair regularly other upland sites + particularly near ridge 1 & also seen along VE camp. 7" flight display on 26 June. Anseria interpres - uncommon, a few heard flying over, seen chasing jaegers. Calidris melanotos - common lowland sandpiper in all lowland tundra (except southern sand dunes + dunes). Ventures scarcely into upland tundra complex (see Webber/Walker vegetation types today's journal) where P. pectoralis lat. absent from upland tundra scours stretch. 7" actively displaying. 98 nests [illegible] C. bairdii - although the 1st pipers saw in Prudhoe this trip it is uncommon, occuring coastally inland in littoral (see journal 24 June) and nesting on pingos and probably along river ridges. Displaying actively on Buffy Pingo. C. alpina - common upland sandpiper, occurring occasionally into lowlands but not in great number, even where lowlands are polygonized. Recorded regularly on all upland transects. 1 not found by Buffy pingo; 3E24 June. Almost all birds moulting primaries. Very little display activity. Although an upland bird it appears to avoid the extreme upland barren tundra used by C. bairdii - i.e. not on snow bents or barren tundra. C. pusilla - most common sandpiper, generally distributed in both lowlands + uplands, but crossing uplands (I think) only when cut by Palmer streams - i.e. it does not occur on vast expanses of uniform upland tundra. Many nests, all W/4E. Little active display, but a lot of alarm calling. No sign of hatched chicks. C. mauri - one seen in Puccinella marsh by west dock 22 June. C. humantopus - uncommon but seen most days. 7" displaying 2 consecutive days in lowlands N. of Buffy Pingo. Song is a cross between fuscicollis + alpina!