House Sparrows: Rapid Evolution of Races in North America
- 1 May 1964
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 144 (3618), 548-550
- https://doi.org/10.1126/science.144.3618.548
Abstract
Conspicuous adaptive differentiation in color and size has occurred in the house sparrow (Passer domesticus) in North America and the Hawaiian Islands since its introduction in the middle of the 19th century. Patterns of geographic variation in North America parallel those shown by native polytypic species, in conformity with Gloger's and Bergmann's ecogeographic rules. Racial differentiation of house sparrow populations may require no more than 50 years.This publication has 23 references indexed in Scilit:
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