Evolutionary Differentiation in Morphology, Vocalizations, and Allozymes Among Nomadic Sibling Species in the North American Red Crossbill (Loxia curvirostra) Complex Jeffrey G. Groth

ISBN: 9780520097827

Published:

Paperback

156 pages


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Evolutionary Differentiation in Morphology, Vocalizations, and Allozymes Among Nomadic Sibling Species in the North American Red Crossbill (Loxia curvirostra) Complex  by  Jeffrey G. Groth

Evolutionary Differentiation in Morphology, Vocalizations, and Allozymes Among Nomadic Sibling Species in the North American Red Crossbill (Loxia curvirostra) Complex by Jeffrey G. Groth
| Paperback | PDF, EPUB, FB2, DjVu, talking book, mp3, RTF | 156 pages | ISBN: 9780520097827 | 8.62 Mb

The highly variable North American red crossbill complex has presented one of the most controversial problems in avian systematics. Although crossbills wander nomadically and breed all year, they have not become homogenized in bill and body size.MoreThe highly variable North American red crossbill complex has presented one of the most controversial problems in avian systematics.

Although crossbills wander nomadically and breed all year, they have not become homogenized in bill and body size. This study suggests that this crossbill complex contains several distinctive sibling species that breed sympatrically and show ecological differences.



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