[detourdog]

I have an old 80 foot chimney from a coal furnace. I maintain it simple for the annual chimney swifts. They come in mid April and leave in August. Apparently only 2 raise a family in it but it ends up with 100s at its peak occupancy. It’s getting re-pointed this year and I will have 2 hi-def cameras installed at the top to capture the activity. Might end up being my first AI project.

[js2]

Chimney swift vs common swift. The two species adapted to habitat loss and urbanization differently.

[detourdog]

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/