On 7 July 2018 at 11:48 MDT, while walking in the Rattlesnake Creek drainage near the north end of Missoula, Missoula County, Montana, my attention was drawn to a pair of Dark-eyed Juncos (Junco hyemalis) about 20 m distant emitting a series of "tik" calls (Hostetter 1961; Nolan and others 2002) as they fluttered and perched low to the ground; they were accompanied by a pair of Chipping Sparrows
(Spizella passerina), which also were vocalizing and acting agitated, but the sparrows did not fly to the ground with the juncos.
Several sparrow species fit the bill: chipping sparrows
, song sparrows and house sparrows.
Among species, detection on repeated surveys was significantly greater in 2007 than in 2008 for Lucy's warblers, western tanagers, chipping sparrows
, and lark buntings, and it was significantly greater in 2008 for lark sparrows (Table 1).
I jotted down countless crows, flocks of American goldfinches, several brown thrashers, a few chipping sparrows
, eastern bluebirds, doves, at least three species of woodpeckers, swallows, starlings, gray catbirds, phoebes, and 25 red-tailed hawks.
Song in chipping sparrows
, Spizella passerina: structure and function.
We saw a bald eagle, an osprey, a loon and ducks of various types, and because we were sitting relatively quietly, had chipping sparrows
land surprising close to us.
(Spizella passerina pinetorium) were found infrequently, always in small flocks (4-5 individuals) and only on pine trees, not descending to the ground.
Populations of other birds, such as chipping sparrows
, decreased, the researchers report in the August CONSERVATION BIOLOGY.
It is possible that the red-winged blackbird and song and chipping sparrows
will eventually attain an mtDNA pattern like that observed in the fox sparrow.