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A Chickadee Mating Zone Surges North

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In a long, narrow strip of territory from Kansas to New Jersey, two closely related species of chickadees meet, mate and give birth to hybrid birds. Now scientists are reporting that this so-called hybrid zone is moving north at a rate that matches the warming trend in winter temperatures.


Read more from the New York Times: http://www.nytimes.com/2014/03/18/science/a-chickadee-mating-zone-surges-north.html


Here is the paper cited:



Climate-Mediated Movement of an Avian Hybrid Zone 
Scott A. Taylor, Thomas A. White, Wesley M. Hochachka, Valentina Ferretti, Robert L. Curry, Irby Lovette
Current Biology - 17 March 2014 (Vol. 24, Issue 6, pp. 671-676)

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