Brown-headed cowbird (Molothrus ater)

Brown-headed cowbird, Paper Mill Road. 2021-06-20 11.34.20 Maryland
Classification: Genus Molothrus; Family New world blackbirds, orioles and allies (Icteridae)
General: The brown-headed cowbird (Molothrus ater) is a small, obligate brood parasitic icterid native to temperate and subtropical North America. It is a permanent resident in the southern parts of its range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or April.^[2] [more]

First documented observation : 2021-06-14 in Maryland.