US Fish & Wildlife Service



Date of this Version



Published by Federal Register / Vol. 51, No. 239 / Friday, December 12, 1986 / Proposed Rules.


The Service proposes to list the black-capped vireo (Vireo atricapillus) as an endangered species under provisions of the Endangered Species Act of I973 as amended. This small bird formerly bred from Kansas through Oklahoma and Texas to central Coahuila in Mexico. The vireo population is declining. It no longer occurs in Kansas, is gravely endangered in Oklahoma where it was found in only three small areas in 1986, and is no longer found in several parts of its former range in Texas. The black-capped vireo is threatened by brown beaded cowbird (Molothrus ater) nest parasitism and by loss of habitat due to such factors as urbanization, grazing. range improvement, and succession. This proposal, if finalized, will implement the protection provided by the Endangered Species Act of 1973, as amended, for Vireo atricapillus. The Service seeks data and comments from the public on this proposal.

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