Document Type

Thesis

Date of Degree Completion

1969

Degree Name

Master of Science (MS)

Department

Biology

Committee Chair

Jared Verner

Second Committee Member

Glen W. Clark

Third Committee Member

Phillip E. Dumas

Abstract

The present study was undertaken in an effort to increase our understanding of this species' life history, with special reference to the functional significance of delayed plumage development in males. Field studies were conducted throughout the breeding season, and efforts were made to determine whether or not sub-adult males were successful in acquiring mates. In conjunction with consideration of the function of delayed plumage development in males of this species, a general review of this phenomenon has been undertaken in the order Passeriformes.

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