Nature Notes banner

GRAND TETON NATURE NOTES


Vol. VII Spring 1941 No. 1.

BIRD CENSUS

by
Bennett T. Gale

The Volume VI, Number 1 issue of Nature Notes contained a summary of the winter and spring bird censuses conducted in Grand Teton National Park during the past year. Additional counts were made in the summer and fall and it is felt that a tabulation of the results should be made to give a complete picture of our changing bird life.

The area chosen for the two additional censuses was the same as that used for the winter and spring counts. The route led from park headquarters to the Beaver Ponds, along the trail through forested areas to the Whitegrass Ranch, along the road following tributaries of the Snake River and return to headquarters through the sagebrush flats along the eastern park boundary. Ranger-Naturalist William T. McKean was responsible for the summer census and the writer made the autumn count.

The summer and autumn censuses follow:

SUMMER CENSUS, 1940

Species Individuals
Troganza's Heron (Ardea herodias treganzai)1
Common Mallard (Anas platrhynchos platrhynchos)15
Barrow's Golden-eye (Glaucionetta islandica)15
California Gull (Larus californicus)1
Nighthawk (Chordeiles minor ssp.)4
Hummingbird (Undetermined)1
Eastern Belted Kingfisher (Megaceryle alcyon alcyon)3
Red-naped Sapsucker (Sphyrapicus varius nuchalis)2
Say's Phoebe (Sayornis saya saya)2
Flycatchers (Undetermined)11
Western Wood Peewe (Myiochanes richardsoni richardsoni)3
Violet Green Swallow (Tachycineta thalassina lepida)1
Tree Swallow (Iridoprocne bicolor)2
Mountain Chickadee (Penthestes gambeli gambeli)3
Western House Wren (Troglodytes aedon parkmani)3
Catbird (Dumetalla carolinsis)1
Western Robin (Turdus migratorius propinquus)5
Audubon's Hermit Thrush (Hylocichla guttata auduboni)1
Olive-backed Thrush (Hylocichla ustulata swainsoni)3
Western Warbling Vireo (Vireo gilvus swainsoni)3
Eastern Yellow Warbler (Dendroica aestiva aestiva)3
Macgillivray's Warbler (Oporornis tolmiei)3
Western Yellow Throat (Geothlypis trichas occidentalis)2
Northern Pileolated Warbler (Wilsonia pusilla pileolata)1
Western Tanager (Piranga ludoviciana)7
Pink-sided Junco (Junco mearnsi)20
Western Chipping Sparrow (Spizella passerina arizonae)18
Song Sparrow (Melospiza melodia ssp.)1
Sparrow (Undetermined)7
Total: 29 species, 142 individuals.

AUTUMN CENSUS, 1940

Species Individuals
Common Mallard (Anas platyrhynchos platyrhynchos)15
Barrow's Golden-eye (Glaucionetta islandica)13
Goshawk (Astur atricapillus ssp.)1
Western Red-tailed Hawk (Buteo borealis calurus)1
Hawk (Undetermined)3
Gray Ruffed Grouse (Bonasa umbellus umbelloides)1
Eastern Belted Kingfisher (Megaceryle alcyon alcyon)1
Rocky Mountain Hairy Woodpecker (Dryobates villosus monticola)3
Rocky Mountain Jay (Perisoreus canadensis capitalis)3
Black-headed Jay (Cyanocitta stelleri annectens)3
American Magpie (Pica pica hudsonia)5
American Raven (Corvus corax sinuatus)6
Clark's Nutcracker (Nucifraga columbiana)4
Long-tailed Chickadee (Penthestes actricapillus septentrionalis)34
Mountain Chickadee (Penthestes gambeli gambeli)86
Western Robin (Turdus migratorius propinquus)26
Townsend's Solitaire (Myadestes townsendi)1
Kinglet (Undetermined)14
Pink-sided Junco (Junco mearnsi)72
Junco (Undetermined but probably Junco oreganus montanus)4
Sparrow (Undetermined)15
Total: 21 species, 311 individuals.

Last winter's count totaled 11 species with 77 individuals observed and the spring figure was 10 species and 61 individuals. Making allowance for duplication of species we find that the total bird count in this area for four representative days in the year is 46 species with 591 individuals noted.

<<< Previous
> Cover <
Next >>>

vol7-1c.htm
14-Oct-2011