Foraging ecology of prairie falcons in northern California Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/0k225g35h

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Nine Prairie Falcons (Falco mexicanus) were radio-tagged in northern California during the spring and summer of 1976 and 1977 to study foraging behavior. The mean home range size for 3 males was 227.8 km²; largest portions of the home range were used during the incubation period. Shifts in foraging areas and prey species were associated with the hatching of young falcons. Falcons flew a mean distance of 7.2 km from nest sites to foraging areas. The mean time falcons spent foraging per day was 1.4 hr. Mean attack distance between falcons and prey was 424 m. Males flew shorter attack distances and, on the average, made fewer foraging attempts than females. Three calculations yielded an average of about 3.0 foraging attempts per kill and, overall, 25% of all foraging attempts were successful. Falcons chose areas of low, sparse vegetation for foraging. Mammalian prey, specifically the Belding's ground squirrel (Spermophilus beldingi), predominated in the diet. Six methods of attacking prey were used by falcons but the low course flight was most frequently observed.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-01-23T20:29:46Z (GMT) No. of bitstreams: 1 HaakBruceAllen1983.pdf: 478159 bytes, checksum: e3493273b249316608b0894a7942ddf7 (MD5)
  • description.provenance : Made available in DSpace on 2012-01-23T22:41:41Z (GMT). No. of bitstreams: 1 HaakBruceAllen1983.pdf: 478159 bytes, checksum: e3493273b249316608b0894a7942ddf7 (MD5) Previous issue date: 1982-12-10
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-01-23T22:41:41Z (GMT) No. of bitstreams: 1 HaakBruceAllen1983.pdf: 478159 bytes, checksum: e3493273b249316608b0894a7942ddf7 (MD5)
  • description.provenance : Submitted by Tamera Ontko (toscannerosu@gmail.com) on 2012-01-23T20:16:50Z No. of bitstreams: 1 HaakBruceAllen1983.pdf: 478159 bytes, checksum: e3493273b249316608b0894a7942ddf7 (MD5)

Relationships

In Administrative Set:
Last modified: 10/21/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items