Alaska field notes, v4437
Page 139
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Transcription
Journal Haul Road: Dictich River→Deadhouse 8 August (could) Tussock Eriophorum vaginatum in better drained sites, ranging to Eriophorum triste, or Carex bigelowii—Salix lanata, insignificantly lower, you more mesic funders. The bird communities are summarized in the table presented on the last 2 pages. Sites 1-3, with their emphasis on avoral community stand out as distinct. The Brooks range site, dominated by Whistlers, Water Pipits, and blessed with Northern Shrikes in small number, are also consistently different. Foothill sites grade from Brooks Range into coastal plain, but differ largely in the conspicuous abundance of the Yellow Wagtail, Motacilla flava. Coastal plain sites are shorebird dominated, but the influence of this taxon began to be manifest in the foot hills, particularly at disturbed roadside sites. [NOTE - 1 C. posita juvenile was seen banded —; YW at Station 16] A riparian set of species—Spizella arborea, Zonotrichia leucophrys, Passerulus sandwichensis,—persisted throughout most of the samples wherever their peculiar microhabitats could be found (see below). A hard core of large species, especially Corvus corax and Larus hyperboreus, were also seen throughout most of the region. Transsect. Systematic list: (not all spp.—see daily list for total) Gavia stellata—seen at ⑪ and on coastal plain. Later seen carrying food to young from Sag River. Anser albifrons—4 adults plus 10 j seen from road at ⑫ Anas platyrhynchos—Toolik lake ⑮, and in the Sag River along N. of Harry Valley. PP. Anas acuta—unusual off coastal plain but many 99 apparent Magga over; cite influence of Sag River common addition on coastal plain Anas crecca—regular in foothills Clangula hyemalis—a few 99 seen in Alaskan Lakes in foothills Melanitta deglandi—one 8 w/ brood diving in large lake N. of Harry Valley by Stubbs #⑯ 14 Aythya marila—8 w/brood seen near Pump Station 4 Buteo lagopus—total of 3 juv. seen —2 at ⑬, 1 at ⑭ Falco peregrinus—1 seen by Franklin Bivolt 6 Aug Falco sparverius—restricted to boreal belt, but apparently common there. 4 individuals, 3 each at ①,②, others. Lagopus lagopus—encountered in Sag River Valley. Lagopus sign widespread Charadrius semipalmatus—2 seen south of Atigun Pass (at ④), been encountered at 5 other sites in lower foothills and along Sag River bank. Adults and juveniles. Pluvialis dominica—adults and juveniles encountered throughout area N. of Atigun pass, but more common once in to Canaan foothills and coastal plain.