Chimney swifts prepare to begin migration; report their night roosts and numbers
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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, all the way to the Amazon. Wisconsin bird experts are asking homeowners, bird watchers and others to help count the birds and report where they see them to provide vital information on a declining, unique species. |
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