Junco hyemalis

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Junco hyemalis

slate-colored junco; sparrow-shaped bird inhabiting west coast of North America.
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With respect to conservation, the Dark-eyed Junco as a whole is a
to 1988, Dark-eyed Junco abundance declined nearly everywhere based on
In general, Orange-crowned Warblers had more maple stems, Red-faced Warblers had more fir stems, Dark-eyed Juncos had more ground cover, and Virginia's Warblers had more locust stems in their nest patches compared to the other bird species regardless of the plant type that nests were placed under [ILLUSTRATION FOR FIGURE 6 OMITTED].
The one exception was Dark-eyed Juncos, which did not show directional selection for any of the four main habitat variables (Table 3).
In Angelina County, seeds of Amaranthus, Ambrosia, Digitaria, and Panicum comprised almost 70% of identifiable seeds in dark-eyed junco digestive tracts; consumption and availability percentages of these genera were similar (Table 4).
In dark-eyed junco digestive tracts, Ambrosia (23%), Amaranthus (20%), Panicum (18%), and Parietaria (12%) made up almost three-fourths of the identifiable seeds.
A study of fasting in tree sparrows (Spizella arborea) and dark-eyed juncos (Junco hyemalis): ecological implications.
Nocturnal energy expenditure of dark-eyed juncos roosting in Indiana during winter.
Only Dark-eyed Juncos achieved higher food intake rates in the habitat that they occupy than in other habitats (Table 1, [ILLUSTRATION FOR FIGURE 4 OMITTED]).
Dark-eyed Juncos and Sage Sparrows experienced large and significant trade-offs in foraging success between habitats ([ILLUSTRATION FOR FIGURE 4 OMITTED], Table 1).
There were also 983 dark-eyed juncos, 640 gold finches, 622 blue jays, 612 starlings, 507 cedar waxwings, 489 house sparrows, 478 rock doves (pigeons), 412 American crows, 396 mourning doves, 333 tufted titmice, 257 turkeys and 241 pine siskins.
Among the larger numbers recorded this year - along with the evening grosbeaks, pine grosbeaks and common redpolls - were 731 house sparrows, 689 rock (Dove) pigeons, 533 dark-eyed juncos, 508 cedar waxwings, 478 starlings, 462 American tree sparrows, 396 American crows, 383 tufted titmouse, 326 American goldfinches, 275 mourning doves, 252 snow buntings, 230 wild turkeys, 217 black-capped chickadees, 204 white-breasted nuthatches, 126 northern cardinals, 131 downy woodpeckers, 111 common ravens and 101 blue jays.