NEST SURVIVAL AND NEST‐SITE SELECTION OF SCARLET MACAWS (Ara macao cyanoptera) IN THE MAYA BIOSPHERE RESERVE OF GUATEMALA AND CHIQUIBUL FOREST OF BELIZE

Britt, Charles Robert (2011) NEST SURVIVAL AND NEST‐SITE SELECTION OF SCARLET MACAWS (Ara macao cyanoptera) IN THE MAYA BIOSPHERE RESERVE OF GUATEMALA AND CHIQUIBUL FOREST OF BELIZE. Masters thesis, New Mexico State University.

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    Abstract

    The Scarlet Macaw (Ara macao) is a wide‐ranging parrot which has experienced reduced abundance and increased isolation in Mesoamerica as a result of habitat destruction and the illegal pet trade. Little is understood about environmental and temporal characteristics that influence nest survival and nest‐site selection. Using an information theoretic approach to model selection, nest survival and nest‐site selection were examined in the central‐west Maya Biosphere Reserve of Guatemala and Chiquibul Forest of Belize. In addition, nest poaching susceptibility was assessed for nests in the Chiquibul Forest of Belize. Results suggest that vi connecting tree canopies have the greatest negative influence on daily nest survival, likely facilitating nest access to predators. Scarlet Macaws favored natural nest cavities over artificial cavities suggesting that current designs are unsuitable or cavity availability is not a limiting factor. Contrary to predictions, shallower cavities were favored. Most poach nests in Belize were located in close proximity to a reservoir, which is believed to facilitate access to nest poachers. Nest survival rates suggest that the known breeding population in Guatemala maybe experiencing growth whereas the known breeding population in Belize may be experiencing a decline driven mainly by high poaching rates. Increased protection is needed to reduce habitat destruction in Guatemala and nest poaching in Belize, and facilitate long‐term viability of these populations.

    Item Type: Thesis (Masters)
    Related URLs:
      Subjects: (A) Biodiversity > (AB) Birds
      (Z) Other or Unspecified
      Publication Sources: (3) Other Source > (3D) Other or Unspecified
      Date Deposited: 01 Apr 2014 22:25
      Last Modified: 01 Apr 2014 22:25
      URI: http://eprints.uberibz.org/id/eprint/1439

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