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    • Journal of Range Management, Volume 38 (1985)
    • Journal of Range Management, Volume 38, Number 2 (March 1985)
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    Sheep Losses to Predators on a California Range, 1973-1983

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    Author
    Scrivner, J. H.
    Howard, W. E.
    Murphy, A. H.
    Hays, J. R.
    Issue Date
    1985-09-01
    Keywords
    coasts
    losses
    predators
    California
    sheep
    rangelands
    
    Metadata
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    Citation
    Scrivner, J. H., Howard, W. E., Murphy, A. H., & Hays, J. R. (1985). Sheep losses to predators on a California range, 1973-1983. Journal of Range Management, 38(5), 418-421.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645557
    DOI
    10.2307/3899712
    Additional Links
    https://rangelands.org/
    Abstract
    Predation at the University of California Hopland Field Station was evaluated for an 11-year period beginning in 1973. Of those lambs placed on range, an average of 2.7% were killed each year by predators. An average of 1.5% of the ewes were killed. When the number of missing animals which were killed was estimated, the average annual predation rate for lambs and ewes killed was 10.4 and 3.8%, respectively. For all known ewe and lamb deaths, respectively, 45% and 26% were caused by predators, 14% and 28% died from causes other than predation, and 41% and 46% died from unknown causes. Of those sheep killed by predators, 89% were killed by coyotes (Canis latrans), 8% by dogs, and 1% each by black bear (Ursus americanus), mountain lion (Felis concolor), and golden eagle (Aquila chrysaetos). More sheep were killed by coyotes from October to March than from April to September and the annual number of sheep killed by coyotes and dogs has increased since the beginning of the study. Not including the value of missing animals which were killed, the present value of livestock killed by predators was estimated to be $62,364.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899712
    Scopus Count
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    Journal of Range Management, Volume 38, Number 2 (March 1985)

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