div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: University of Wisconsin–MadisonimageslibrarywisceduEcoNatResEFacsDNRBullDNRBullwinter Space sufficient to fit the open-skies requirement of the bird is now present in src=https:reader034vdocumentsmxreader034viewer20220424095f258a1a6a1eae349a25b087html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: University of Wisconsin–MadisonimageslibrarywisceduEcoNatResEFacsDNRBullDNRBullwinter Space sufficient to fit the open-skies requirement of the bird is now present in src=https:reader034vdocumentsmxreader034viewer20220424095f258a1a6a1eae349a25b087html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: University of Wisconsin–MadisonimageslibrarywisceduEcoNatResEFacsDNRBullDNRBullwinter Space sufficient to fit the open-skies requirement of the bird is now present in src=https:reader034vdocumentsmxreader034viewer20220424095f258a1a6a1eae349a25b087html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdiv