Hybridization of bird species.

@article{Grant1992HybridizationOB,
  title={Hybridization of bird species.},
  author={Peter R Grant and B. Rosemary Grant},
  journal={Science},
  year={1992},
  volume={256 5054},
  pages={
          193-7
        }
}
Hybridization, the interbreeding of species, provides favorable conditions for major and rapid evolution to occur. In birds it is widespread. Approximately one in ten species is known to hybridize, and the true global incidence is likely to be much higher. A longitudinal study of Darwin's finch populations on a Galápagos island shows that hybrids exhibit higher fitness than the parental species over several years. Hybrids may be at an occasional disadvantage for ecological rather than genetic… CONTINUE READING

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