Preliminary ground and aerial surveys for Orange-breasted Falcons in Central America

Thorstrom, R. and Watson, R. and Baker, Aaron J. and Ayers, S. and Anderson, D. L. (2002) Preliminary ground and aerial surveys for Orange-breasted Falcons in Central America. Journal of Raptor Research, 36 (1). pp. 39-44.

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    Abstract

    Ground and aerial surveys for Orange-breasted Falcons Falco deiroleucus) were conducted during March-June 1999 in Honduras, and March-May 2000 in El Salvador, Honduras, Nicaragua, Costa Rica, and Panama, all within the likely range of this species. Sixty-six cliffs were checked by ground surveys. No Orange-breasted Falcon was found in Central America. We examined 55 cliffs by fixed-wing aircraft during 24 hr of flying. No Orange-breasted Falcon was seen in El Salvador, Honduras, Nicaragua, Costa Rica, and Panama. in Honduras and Panama, we checked 262 limestone cliffs by helicopter during 47 hr of flying and one Orange-breasted Falcon was seen in a limestone canyon in the Darien Province of Panama, and one sighting of two birds, possibly Orange-breasted Falcons, 11 km south in the same region. The apparent absence of cliff-nesting Orange-breasted Falcons in seemingly suitable habitat in much of Central America is inexplicable and warrants further surveys but indicates that the population in Guatemala and Belize is geographically and genetically isolated from the South American birds.

    Item Type: Peer-reviewed Journal Article
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      Publisher: Unspecified Publisher
      Subjects: (A) Biodiversity > (AB) Birds
      Publication Sources: (3) Other Source > (3D) Other or Unspecified
      Date Deposited: 15 Nov 2010 06:00
      Last Modified: 01 Feb 2012 16:09
      URI: http://eprints.uberibz.org/id/eprint/970

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