Seven passenger pigeons (possibly other types of pigeon as well?), a species of pigeon now extinct. Part of a group of pigeons that lived in captivity in the aviary of Professor C.O. Whitman, professor of Zoology at the University of Chicago.
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{{Information |Description=Seven passenger pigeons (possibly other types of pigeon as well?), a species of pigeon now extinct. Part of a group of pigeons that lived in captivity in the aviary of Professor C.O. Whitman, professor of Zoology at the Unive...