Date of Award:

5-1-1970

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Biology

Department name when degree awarded

Zoology

Committee Chair(s)

Keith L. Dixon

Committee

Keith L. Dixon

Committee

D. M. Hammond

Committee

D. F. Balph

Abstract

The development of selected vocalizations of hand-reared Black-Capped Chickadees (Parus atricapillus) was described and compared to the ontongeny of vocal signals of wild-reared juveniles. The adultlike vocalizations given by laboratory-reared juveniles, six weeks after hatching, were similar to the vocalizations of adults reared in the wild. The chickadee-dee, contact-flight, and the fright calls all appear to be derived from the begging call given by the nestlings. Songs may be derived from the chickadee-dee call precursor, however.

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