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mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Ecology and breeding behavior of the white-tailed hawk on the northern coastal prairies of Texas
  name:
    name part: Farquhar, Charles Craig
    name part: 1954-
    role:
      role term: creator
  name:
    name part: Arnold, Keith A.
    role:
      role term: degree supervisor.
  name:
    name part: Odom, Ted W.
    role:
      role term: degree committee member.
  name:
    name part: Silvy, Nova J.
    role:
      role term: degree committee member.
  name:
    name part: Slack, R. Douglas
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1986
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: x, 71 leaves : illustrations ; 29 cm
  abstract: I examined the ecology and breeding biology of a population of white-tailed hawks (Buteo albicaudatus hypospodius; 6 pairs, 1983, 1984; 7 pairs 1985) at the Attwater Prairie Chicken National Wildlife Refuge in Colorado County, Texas. The hawks nested almost exclusively (18/20 nests) in Macartney rose (Rosa bracteata). Incubation periods ranged from 29-32 days (x = 31.2 da.; Mar-Apr) and fledging occurred at 7-7.5 weeks (May-Jun). The fledglings were dependent upon their parents for up to 7 months after leaving the nest. Adults typically chased the immatures away at the onset of the breeding season. Subadult hawks occasionally returned to their natal territories. Utilization distributions (70%), were estimated using sight locations from 10 pairs of adults (1984-1985) and radio locations from 2 of the immatures (1984). Immatures dramatically increased their home ranges over their first 7 months of flight (37 ha-147 ha, x = 59 ha for bird #9; 16 ha-199 ha, x = 72 ha for bird #14). Home ranges of adult males were nearly 3 times larger than those of females during the breeding season (males, x = 33 ha, females, x = 14 ha, 1984; males, x = 34 ha, females, x = 13 ha, 1985). Males increased and females decreased their home ranges after the onset of incubation. All pairs always copulated and always laid eggs. Nesting success was high in 1983 (100%) and 1985 (100%) and lower in 1984 (71%). Breeding adults performed an interesting behavior which may function in courtship or pair bonding, not previously described, involving placing of long woody stems or branches up to 2.5 m in length on nests. I recorded 1 instance of renesting when 1 egg was abandoned early in the season; the pair fledged 2 young later in the season. Time-activity data suggest this species alters the length of its daily incubation sessions, possibly in accordance with temperature. From field observations, I noted distinct intersexual variation in alarm calls which is useful in field-sexing. Prey taxa are vari…
  note: "Major subject: Wildlife and Fisheries Sciences."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. Texas A & M University 1986
  note: Includes bibliographical references (leaves 61-67).
  subject:
    topic: Hawks
    topic: Ecology
  subject:
    topic: Hawks
    topic: Reproduction
  subject:
    topic: Major wildlife and fisheries sciences
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-21927
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-21927
  record info:
    record content source: TXA
    record creation date: 880517
    record change date: 20220104090801.0
    record identifier: in00000015548
    language of cataloging:
      language term: eng