All of the essays Adubon wrote about birds can be found at the Audubon Society's website devoted to Birds of America. The volumes of Audubon's Ornithological Biographies, which include the same text as it originally appeared, have been digitized by the University of Pittsburgh.
Extract taken from a 1929 edition of the Journal of John James Audubon: Made During His Trip to New Orleans in 1820-1821, available at the Internet Archive.
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