Adult mockingbirds can fall victim to birds of prey such as the great horned owl, screech owl and sharp-shinned hawk, though their tenacious behavior makes them less likely to be captured.
Scrub-jays also have killed and eaten mockingbirds.
Snakes rarely capture incubating females.
Fledgelings have been prey to domestic cats, red-tailed hawks, and crows.
Eggs and nestlings are consumed by blue jays, fish crows and American crows, red-tailed hawks, swallow-tailed kites, snakes, squirrels, and cats.
Blowfly larvae and Haemoproteus have been found in Florida and Arizona populations, respectively.

Winter storms limit the expansion of mockingbirds in their range.
The storms have played a role in the declining of the populations in Ohio  (where it has since recovered), Michigan, Minnesota and likely in Quebec.
Dry seasons also affect the mockingbird populations in Arizona.
Adult mockingbirds can fall victim to birds of prey such as the great horned owl, screech owl and sharp-shinned hawk, though their tenacious behavior makes them less likely to be captured. Scrub-jays also have killed and eaten mockingbirds. Snakes rarely capture incubating females. Fledgelings have been prey to domestic cats, red-tailed hawks, and crows. Eggs and nestlings are consumed by blue jays, fish crows and American crows, red-tailed hawks, swallow-tailed kites, snakes, squirrels, and cats. Blowfly larvae and Haemoproteus have been found in Florida and Arizona populations, respectively.
Winter storms limit the expansion of mockingbirds in their range. The storms have played a role in the declining of the populations in Ohio  (where it has since recovered), Michigan, Minnesota and likely in Quebec. Dry seasons also affect the mockingbird populations in Arizona.
Northern mockingbird