Movements of Adult and Juvenile Bananaquits within a Morph-Ratio Cline
- 1 July 1981
- journal article
- Published by Oxford University Press (OUP) in The Auk
- Vol. 98 (3) , 571-577
- https://doi.org/10.1093/auk/98.3.571
Abstract
Adult and juvenile Bananaquits (Coereba flaveola) were captured and banded at nine different sites in southern Grenada in August-October 1976, 1977, and 1978. The proportion of black morphs decreased to seaward on Point Saline. The morph-ratio cline was steeper for adults than for juveniles, because juveniles move greater distances than postbreeding adults. Home-range sizes of adults are larger during the dry season than in the wet season, which under some circumstances can bring about temporal changes in the steepness of a cline.Keywords
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