See a swoop of swifts? Here's why a group of birders is trying to count them all

[news]

https://i.cbc.ca/1.6577056.1662723959!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_460/chimney-swifts-in-london-ont.jpg London, Ont., has become a hub for monitoring of chimney swifts and efforts to protect the threatened bird species, thanks to the work of volunteers with an organization that works to preserve nature.


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