What eats chimney swifts?

Chimney swifts have a few natural predators, primarily Birds of Prey such as hawks and kestrels. Additionally, larger birds like crows may also pose a threat to them, especially when they are nesting. Some mammals, such as raccoons and domestic cats, can prey on chimney swift nestlings if they access their nesting sites. Overall, while chimney swifts are agile fliers, they are still vulnerable to various predators in their environment.