Natural History Wanderings

The New York Times reported on the northward movement of a chickadee mating zone.Two related chickadee species have been meeting narrow strip between Kansas and New Jersey to breed resulting in hybrid chicks. Scientists report that this “Hybrid Zone” has moved north seven miles in the past 10 years at a rate that matches warming trends of winter temperatures

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 at: A Chickadee Mating Zone Surges North – NYTimes.com