Document Type

Article

Date of Original Version

1995

DOI

10.2307/1369001

Publisher Statement

© 1995 by the Regents of the University of California/Cooper Ornithological Society. Copying and permissions notice: Authorization to copy this content beyond fair use (as specified in Sections 107 and 108 of the U. S. Copyright Law) for internal or personal use, or the internal or personal use of specific clients, is granted by the Regents of the University of California on behalf of the Cooper Ornithological Society for libraries and other users, provided that they are registered with and pay the specified fee via Rightslink® on [JSTOR (http://www.jstor.org/r/ucal)] or directly with the Copyright Clearance Center, http://www.copyright.com.

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