Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The American Tree Sparrow (Spizella arborea) is a medium-sized sparrow. Adults have a rusty cap and grey underparts with a small dark spot on the breast. They have a rusty back with lighter stripes, brown wings with white bars and a slim tail. Their face is grey with a rusty line through the eye. Their flanks are splashed with light brown. They are similar in appearance to the Chipping Sparrow.

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