Browsing Journal of Range Management, Volume 28, Number 1 (January 1975) by Subjects
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Eagles and Sheep: A ViewpointThe controversy regarding golden eagle predation on lambs in the Southwest was addressed using winter eagle population data from Texas and eastern New Mexico, eagle food habits information, and lamb mortality data. The sum of this review indicates that too few lambs are eaten as prey to justify presecution of golden eagles for the presumptive enhancement of livestock production. An inquiry concerning brush cover and carnivore food habits suggests that lagomorphs, a staple in golden eagle diets, decline as usable food for carnivores where brush prevails on lambing ranges.
Foodniche of Coyotes in the Rolling Plains of TexasCoyote diets were determined from scat and stomach analyses over a two-year period in an area centered in the Rolling Plains region of Texas. Fruit from 9 species of native plants were the most important food for coyotes, making up 46% of the annual diet. Honey mesquite pods alone contributed 15.6% of the annual diet. Rodents contributed 24.5% of the coyote's annual diet, while leporids made up just 10.5%. The foodniche of coyotes varied seasonally as well as annually. The coyote's role as an agent of seed dispersal appears minimal since digestion of some seeds by coyotes significantly reduces percent germination. Late evening and pre-dawn hours seem the normal feeding period for most coyotes, and moon phase did not affect the timing of this activity. In this study there was no evidence of coyote predation on cattle.