Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Spatial and Temporal Patterns in the Diet of Common Ravens in Southwestern Idaho

Kathleen A. Engel and Leonard S. Young
The Condor
Vol. 91, No. 2 (May, 1989), pp. 372-378
DOI: 10.2307/1368316
Stable URL: http://www.jstor.org/stable/1368316
Page Count: 7
  • Read Online (Free)
  • Download ($12.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available

Abstract

From May to August 1984 and April 1985 to April 1986, we collected 574 Common Raven (Corvus corax) pellets from five communal roosts in southwestern Idaho. Results of pellet analyses differed from those of previous studies of the Common Raven diet. Cereal grains were the principal pellet constituent, followed by small mammals, grass-hoppers, cattle carrion, and birds. Pellet composition differed significantly within years, between years, and among roosts. Insects were most numerous in summer and fall pellets, and cattle and bird remains were most abundant in spring pellets. Between years, amounts of insect and cattle remains differed significantly. Amounts of cattle remains also differed significantly among roosts. Our data suggest that the diet of Common Ravens in southwestern Idaho is closely associated with agricultural activities. We recommend intensive, year-round sampling from both raven nest sites and roosts to adequately describe the raven diet in a given area.

Page Thumbnails

  • Thumbnail: Page 
372
    372
  • Thumbnail: Page 
373
    373
  • Thumbnail: Page 
374
    374
  • Thumbnail: Page 
375
    375
  • Thumbnail: Page 
376
    376
  • Thumbnail: Page 
377
    377
  • Thumbnail: Page 
378
    378