Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
JPMYERS
1978
Calcarius lapponicus
Atkasook, Muddy River, N. Slope, AK
22 May
48 and 29 by camp, foraging near bluff in melted area.
23 May
Flocks of 8s on several areas cleared of snow. ~10 8s by airstrip, another 20 or so (16-17, 40-41) - see coordinate map. Absolutely no sign of display.
25 May
Heard singing 8s out by the end of TII. Three guys were moving about in a flak, however
26 May
Flocking longspur 8s along T5 on the ridge. Several birds occasional in flight song chasing.
27 May
18 singing by camp. 9s still very unusual.
29 May
See journal. Today was Longspur Arrival Day. We are inundated any migrating longspurs. In 45 min from 0545 to 0630 (good weather airstrip) at least 50 if not 100 birds came past me headed ESE. 9s common now. 8s beginning to display + chase regularly. There is a longspur on most haul patches now, and 10 more in the air between them.
30 May
8 carrying nesting material
Barrow, N. Slope Borough, Alaska
31 May
evening - 8s displaying over grid 1+2, T5. Not many, however. A few 9s also seen.
3 June
Although to date I have found 8s on the tundra, particularly the warm evening of 31 May, by far most are flocking in clear areas by the road + have yet to move on to breeding sites
5 June
8s + 9s on tundra, carrying nesting material.
6 June
1 nest cup almost complete.
13 June
2 clutches w/ 6 eggs. 8s in flight display on grid 3. Floaters conspicuous. They flit low over the ground, fruitlessly slipping in + out of tundra, even as the resident displays. Watched one go from between 3 tundras + be chased by residents. They are occasionally quite persistent. In fact it looks as if the period of multi-8 groups w/9s may be beginning. Watched 2 8s w/1 9 remain together for 15 min. One 8 occasionally chased often. One floater moved between tundras by slipping through polygon trough system, below top of polygons