ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Crossed mandibles characterize crossbills (Loxia) (Fig. 1) and have been pivotal in their radiation into about 25 species and subspecies4'5. The pointed and decurved upper mandibles are inserted between overlapping conifer cone scales to create gaps which are then widened by lateral abduction ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/349519a0
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