Vocal Mimicry in Captive Budgerigars (Melopsittacus undulatus)1


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    The support and suggestions of Dr. John T. Emlen are gratefully acknowledged tor they sustained this study throughout. Many thanks are also due Dr. Gene P. Sackett lor his counsel and encouragement during the concluding phase of this research. I am also grateful to Dr. Barbara F. Brockway for helpful information supplied. This paper represents part of a doctoral thesis submitted to the Department of Zoology, University of Wisconsin, Madison. Financial support for this research was provided by National Science Foundation Grant GB-4193.

Children's Research Center, University of Illinois, Champaign, Illinois 61820, U.S.A.