The Chimney Sweeps Islands are a pair of small islands located within New York City in the northern part of City Island Harbor in the borough of The Bronx. The islands, along with High Island, New York, divide City Island Harbor from Pelham Bay. The islands are entirely made out of bedrock. The islands are uninhabited, but are home to many birds, such as gulls, skuas, and great blue herons. The islands are owned by the New York City Department of Parks and Recreation, which acquired them in 1939 from the Chimney Sweeps Islands Corporation, a private group that used the islands for recreation, and are now a part of Pelham Bay Park.