From <i>Bird-Lore, Vol. VI, No. 6.</i> Originally issued as Educational Leaflets no. 1-100 of the National Association of Audubon Societies.
<bdi><a href="https://en.wikipedia.org/wiki/en:William_Dutcher" class="extiw" title="w:en:William Dutcher"><span title="Ornithologist and New York insurance businessman (1846-1920)">William Dutcher</span></a>
</bdi>
1904-11
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