Alaska field notes, v4438
Page 169
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Transcription
JP Myers 1979 JOURNAL NARL, Barrow, North Slope Borough, Alaska 23 June (cmt'd) transect totally reached levels unheard of for early june - "like melonotos / ha, with 8 + 9 equally abundant (in fact & slightly greater than 8). that is unusual, then in 5 day period #4 (10-14 June) there was a lull that continued through to last weeks. Finally during this current 5-day period (20-24 June) 88' shot up to .68/ha + 9 were on the .3's. That 8' density is screwy, because over the uplands densities aren't that high. It indicates either that there are non territorial birds being picked up (yes, says McCaffery) or the transects are yielding an inflated density. Whatever, it is quite a high + quite different from my previous years. 88 on Grid 4 are still behaving receptively to 88, and like butt-up. I saw 9 flights to NE beginning 18 June, + continuing through yesterday. C. elping - steady as they go. Transect density of .35-.55/ha. that is like previous years. Grid 1 density may be somewhat high, with up to 10 territorial elpings on the 33 ha plot. The breeding season is quite protracted. 2 pairs on Grid 1 must be reesting, as from the 18-20 they were doing nest cup displays. See phenology notes. C. bairdii - In the uplands, along the coast, on gravel areas, and on Grid 1 Baird's are very dense. 0.2 ha/territory, if my data are right on Grid 1. They are breeding late also. Even now most pairs on the grid have not finished laying. I can't help but feel that bairdii's spacing system is more variant than Pteika gives them credit for being. C. pusilla - as thick or thicker than usual on Grid 1. Also being found out in the lowlands more than usual. Find wood well come from the transects C mauri - While there was almost no sign of mauri throughout the 1st half of June, they are now all over Coastal Ridge + Transect B, displaying. The gang at Atkasook reports a mid June influx also.