Single origin of human commensalism in the house sparrow

@article{Stre2012SingleOO,
  title={Single origin of human commensalism in the house sparrow},
  author={Glenn-Peter S{\ae}tre and Sepand Riyahi and Mansour Aliabadian and Jo S. Hermansen and Silje Hogner and Urban Olsson and M. F. Gonz{\`a}lez Rojas and Stein Are S{\ae}ther and Cassandra N Trier and Tore Oldeide Elgvin},
  journal={Journal of Evolutionary Biology},
  year={2012},
  volume={25}
}
The current, virtually worldwide distribution of the house sparrow (Passer domesticus) is a result of its commensal relationship with humans. It has been suggested that long before the advent of agriculture, an early glacial advance resulted in two disjunct ranges of ancestral house sparrows – one in the Middle East and another on the Indian subcontinent. Differentiation during this period of isolation resulted in two major groups of subspecies: the domesticus group and the indicus group… 

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