rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: The
    title: African Cattle egret in Texas and its relation to the Little blue heron, Snowy egret, and Louisiana heron
  name:
    name part: Telfair, Raymond Clark
    name part: 1941-
    role:
      role term: creator
  name:
    name part: Arnold, Keith Alan
    role:
      role term: degree supervisor.
  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: txu
    date issued: 1979
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: 2 volumes (xxvi, 552 leaves) : illustrations, maps ; 29 cm
  abstract: This study includes: 1) arrival, range expansion, seasonal distribution, and migration; 2) nesting habitats; 3) food habits; 4) reproduction; 5) population dynamics; 6) pesticide residues; 7) species interrelations; and 8) economic importance. Cattle Egrets first nested in Texas in 1959. Present breeding populations use 49.8% of Texas heronries occurring within their breeding range. Breeding populations include 34.3% in coastal zones, 33.3% in the Trinity River System, and 27.2% in the Sabine, Neches, Brazos, and Red River systems combined. Heronries occupied by the three associated species determine Cattle Egret breeding distribution. Cattle Egrets are the last species to arrive in Texas heronries. Post-breeding juvenile Cattle Egrets in Texas disperse southward and southwestward. Fall migration is gradual, coastward, mainly along flood plains, then southward as far as El Salvador. Cattle Egrets may have entered Texas from eastern Gulf States rather than Central America and Mexico. Inland heronries contain Cattle Egrets and Little Blue Herons, primarily. On coastal islands, Snowy Egrets and Louisiana Herons usually outnumber Cattle Egrets; Little Blue Herons are usually absent. Nest placement is relatively uniform and approximately unilayered. Cattle Egret late-nesting in Texas heronries synchronizes with accumulative increase of pasture-dwelling insects. Nest sites, materials, and construction resemble those of the three associated native ardeids, but Cattle Egrets exhibit less nest-site preference. Cattle Egret clutches average 3.58; average intervals and periods are: between successive eggs (2.04 days), incubation (24.0 days), and hatching (1.7 days). Cattle Egret chicks show sigmoidal growth pattern curves fitting the logistic equation. Few chicks starve. Heronry breeding successes, high to low, are: coastal islands, inland wooded islands, swamps, and woodlands. Estimated annual productivity for Cattle Egrets and Snowy Egrets is 1.2, for Louisiana Herons 0.9, a…
  note: "Major subject: Wildlife and Fisheries Sciences."
  note: Vita.
  note: Texas A & M University
  note: Includes bibliographical references (leaves 487-510).
  subject:
    geographic code: n-us-tx
  subject:
    topic: Birds
    geographic: Texas
  subject:
    topic: Cattle egret
  subject:
    topic: Herons
  subject:
    topic: Major wildlife and fisheries sciences
  subject:
    topic: Birds
  subject:
    topic: Herons
  subject:
    geographic: Texas
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-718356
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-718356
  record info:
    record content source: TXA
    record creation date: 800711
    record change date: 20220104090456.0
    record identifier: in00000706116
    language of cataloging:
      language term: eng