Chipping Sparrows are similar to other sparrows with rusty crowns but have a white supercilium and black eye line in Spring and Summer. Field Sparrow has a pink bill and white eye ring. Swamp Sparrow has rusty wings and a dingy breast. American Tree Sparrow has a dark breast spot. In Fall and Winter, Chipping Sparrows are quite similar to Clay-colored and Brewer's Sparrows. Often, they retain some rust in the crown and can be identified by that field mark. Clay-colored and Brewer's Sparrows have pale lores and brown rumps. Clay-colored Sparrow has more distinct whisker and a buffier breast. Brewer's Sparrow has an indistinct supercilium and an eye ring.