University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/DNRBull/DNRBull...winter....
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University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/DNRBull/DNRBull...winter. Space sufficient to fit the open-skies requirement of the bird is now present in