Another big difference appears to be they live in different parts of the world. Chimney Swifts migrate between North and South America and the common Swift migr

Another big difference appears to be they live in different parts of the world. Chimney Swifts migrate between North and South America and the common Swift migrates between Europe/Asia and Africa. https://www.earthofbirds.com/common-swift-vs-chimney-swift/ https://www.earthofbirds.com/common-swift-vs-chimney-swift/