Abstract
IN the summer of 1967 in Wytham near Oxford, I induced house sparrows Passer domesticus to rear young tree sparrows P. montanus, and vice versa, by exchanging freshly laid clutches of the two species in nestboxes. Details of this experiment will be discussed elsewhere.
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CHEKE, A. Mechanism and Consequences of Hybridization in Sparrows Passer. Nature 222, 179–180 (1969). https://doi.org/10.1038/222179a0
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DOI: https://doi.org/10.1038/222179a0
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