Note 175 — Chapter XXXIII · NEW ENTERPRISES AND LIFE AT "MINNIE'S LAND"

Of these, according to Mr. Witmer Stone (see Bibliography, No. 221), 474 are sanctioned in the present "Check List" of the American Ornithologists' Union; seventeen have proved to be identical with others; ten are extra-limital; two are hybrids; and five have never been found since; of Audubon's suppressed species, two have been resuscitated. Audubon is thought to have been personally acquainted with 385 American species, others being known to him only through specimens sent by collectors, or discovered in museums.