American Tree Sparrow - Spizella arborea
American Tree Sparrow - Spizella arborea
General Description
Small species, sexually monomorphic. Grayish underside with a back streaked with black, cream, and brown.
Distribution
Montana Range
Migration
Bozeman area normal migration periods are from October 27 to December 20 and March 5 to 25. The spring peak is March 15.
Habitat
Found near tree lines, or open areas with scattered trees. Commonly winters in neighborhood gardens and feeders.
Food Habits
Diet includes spiders, seeds of grass, sedge, forbs, buds, and berries.
Reproductive Characteristics
Single brooded species with 3-5 eggs per hatch. Incubation period 12-13 days. Eggs pale-blue to greenish-white. Nests found on ground in shallow depressions; rarely in shrubs and low trees.