Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

The Status and Distribution of Trumpeter Swans (Cygnus buccinator) in the Yukon

Richard W. McKelvey, Malcolm C. Dennington and David Mossop
Arctic
Vol. 36, No. 1 (Mar., 1983), pp. 76-81
Stable URL: http://www.jstor.org/stable/40509470
Page Count: 6
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Status and Distribution of Trumpeter Swans (Cygnus buccinator) in the Yukon
Preview not available

Abstract

The presence of a breeding population of Trumpeter Swans (Cygnus buccinator) in the Yukon is established from previous summer records of swans and by data from extensive aerial surveys. The population is estimated to number about 50 pairs, with at least 32 pairs found near Toobally Lakes in southeast Yukon Territory. Habitat, nesting, population, and migration data are presented for the Toobally Lakes population. The habitat is characterized by rolling hills interspersed with water bodies from 5 ha to 250 ha in area, frequently influenced by beaver. Nesting and cygnet development appeared to be later than those reported for Alaska or Alberta. Cygnet production was 19 young by August 1980 and 26 young by July 1981. Band returns indicate that part of the Yukon population winters in Montana. Recommendations for habitat protection are made. /// La présence d'une population nidificatrice de cygne trompette (Cygnus buccinator) au Yukon est confirmée par la revision de toutes les mentions estivales de cygnes et par la présentation de résultats d'inventaires aériens intensifiés. La population de cygne est estimée à environ 50 couples, avec au moins 32 couples près des lacs Toobally. L'habitat est caractérisé par des collines parsemées de lacs de 5 ha à 250 ha, souvent modifiés par les castors. La nidification et le développement des jeunes semble être plus tard que ceux d'Alaska ou d'Alberta. Nous avons recensé 19 jeunes en août 1980 et 26 jeunes en juillet 1981. Le retour de bague indiquent qu'une partie de la population du Yukon hiverne au Montana. Des recommendations pour la protection de cette population sont présentées.

Page Thumbnails

  • Thumbnail: Page 
[76]
    [76]
  • Thumbnail: Page 
77
    77
  • Thumbnail: Page 
78
    78
  • Thumbnail: Page 
79
    79
  • Thumbnail: Page 
80
    80
  • Thumbnail: Page 
81
    81