Western Great Lakes Bird and Bat Observatory

Headquarters at Forest Beach Migratory Preserve

Reporting on this dusk phenomenon helps protect an amazing but declining species

That “smoke” pouring into brick chimneys in coming weeks isn’t an optical illusion but likely hundreds of native chimney swifts roosting for the night and gathering strength and numbers before they migrate south.

For details  on what you can do and to see an amazing video, click here
http://dnr.wi.gov/news/Weekly/?id=390#art2