For sheep horns, bigger is not better
Trade-offs between studliness and survival keep less endowed sheep in the mix

HORNY GENES This big-horned Soay ram will fight other males of his species for females on the St. Kilda archipelago during the spring rut. His ample horns, however, may not necessarily give him the best competitive edge, genetically.
Arpat Ozgul
This article is only available to Science News subscribers.
Subscribers, enter your e-mail address to access our archives.
