About Spizelloides arborea (A.Wilson, 1810)
This bird species, Spizelloides arborea, has the following standard measurements: an average length of 5.5 inches (14 cm), an average wingspan of 9.4 inches (24 cm), and a weight ranging from 0.5 to 1.0 ounces (13 to 28 grams). Adult individuals have a rusty cap, grey underparts, and a small dark spot on the breast. Their back is rusty with lighter stripes, their wings are brown with white bars, and they have a slim tail. Their face is grey, with a rusty line running through the eye, and light brown patches mark their flanks. In appearance, Spizelloides arborea is similar to the chipping sparrow. Their breeding habitat is located on tundra or at the northern limits of the boreal forest in Alaska and northern Canada, where they build their nests on the ground. These birds, commonly called American tree sparrows, migrate to southern Canada and the United States to overwinter.
