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

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 i...

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Bibliographic Details
Main Authors: Richard W. Mckelvey, Malcolm C. Denningtonz, David Mossop
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Mots cl
Cygne trompette
Cygnus buccinator
Yukon
nidification
distribution
migration
habitat Traduit par J.P. Savard
Toobally Lakes
Arctic
Alaska
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.427
http://pubs.aina.ucalgary.ca/arctic/Arctic36-1-76.pdf
Description
Summary: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 Lskn 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 proteaion are made.

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