American Tree Sparrow

The American tree sparrow (Spizelloides arborea), also known as the winter sparrow, is a medium-sized New World sparrow. It had been classified under the genus Spizella, but multilocus molecular evidence suggested placement in its own genus. 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. Due to this, they are sometimes also called the winter chippy.