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The relative effectiveness of fixed-wing aircraft and helicopters for surveying trumpeter swans / Len J. Shandruk and Kevin J. McCormick.: CW69-9/182E-PDF

"The effectiveness of fixed-wing aircraft and helicopters for surveying Trumpeter Swans Cygnus buccinator is compared. The helicopter survey yielded 70% more adults and 44% more cygnets than the fixed-wing aircraft survey"--Abstract.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.850274&sl=0

Publication information
Department/Agency
  • Canada. Environment Canada.
  • Canadian Wildlife Service.
TitleThe relative effectiveness of fixed-wing aircraft and helicopters for surveying trumpeter swans / Len J. Shandruk and Kevin J. McCormick.
Series title
  • Progress notes ; no. 182
Publication typeMonograph - View Master Record
Language[English]
Other language editions[French]
FormatDigital text
Electronic document
Note(s)
  • Issued also in French under title: Efficacité comparée de l'avion et de l'hélicoptère pour les dénombrements de cygnes trompettes.
  • "September 1989."
  • Digitized edition from print [produced by Environment and Climate Change Canada].
Publishing information
  • [Ottawa] : Canadian Wildlife Service, 1989.
Author / Contributor
  • Shandruk, Len J.
  • McCormick, Kevin J.
Description[1] p.
Catalogue number
  • CW69-9/182E-PDF
Subject terms
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