Chipping Sparrow

The Chipping Sparrow is one of the smallest sparrows. It is easily identified during the breeding season by the reddish-brown cap, white line over the eye, black line through the eye, and pale gray unstreaked chest.

In the non-breeding season (August-March), the cap is brownish, the stripe over the eye is dusky, the line through the eye is dark, but not obviously black, and the breast remains unstreaked. https://www.tn.gov/twra/wildlife/birds/grassland-and-shrub-birds/chipping-sparrow.html