scholarly journals Season length influences breeding range dynamics of trumpeter swans Cygnus buccinator

2011 ◽  
Vol 17 (4) ◽  
pp. 364-372 ◽  
Author(s):  
Joshua H. Schmidt ◽  
Mark S. Lindberg ◽  
Devin S. Johnson ◽  
David L. Verbyla
Keyword(s):  
Season Length ◽  
Cygnus Buccinator ◽  
Breeding Range ◽  
Range Dynamics ◽  
Trumpeter Swans

scholarly journals Pathology and diagnosis of avian bornavirus infection in wild Canada geese (Branta canadensis), trumpeter swans (Cygnus buccinator) and mute swans (Cygnus olor) in Canada: a retrospective study

2013 ◽  
Vol 42 (2) ◽  
pp. 114-128 ◽  
Author(s):  
Pauline Delnatte ◽  
Davor Ojkic ◽  
Josepha DeLay ◽  
Doug Campbell ◽  
Graham Crawshaw ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Cygnus Buccinator ◽  
Cygnus Olor ◽  
Avian Bornavirus ◽  
Mute Swans ◽  
Trumpeter Swans

Evaluation of translocation criteria: case study with trumpeter swans (Cygnus buccinator)

2000 ◽  
Vol 94 (2) ◽  
pp. 173-181 ◽  
Author(s):  
Katharina A.M Engelhardt ◽  
John A Kadlec ◽  
Victoria L Roy ◽  
James A Powell
Keyword(s):  
Cygnus Buccinator ◽  
Trumpeter Swans

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

ARCTIC ◽  
1983 ◽  
Vol 36 (1) ◽  
Author(s):  
Richard W. McKelvey ◽  
Malcolm C. Dennington ◽  
David Mossop
Keyword(s):  
Cygnus Buccinator ◽  
The Status ◽  
Trumpeter Swans

scholarly journals Surveillance of Amyloidosis and other Diseases at Necropsy in Captive Trumpeter Swans (Cygnus Buccinator)

2005 ◽  
Vol 17 (3) ◽  
pp. 295-298 ◽  
Author(s):  
David K. Meyerholz ◽  
Yannick F. Vanloubbeeck ◽  
Shannon J. Hostetter ◽  
Dianna M. Jordan ◽  
Amanda J. Fales-Williams
Keyword(s):  
Parasitic Infection ◽  
Pulmonary Hemorrhage ◽  
Amyloid Deposition ◽  
Diagnostic Features ◽  
Diagnostic Laboratory ◽  
Cygnus Buccinator ◽  
Veterinary Pathology ◽  
Trumpeter Swan ◽  
Trumpeter Swans ◽  
Etiologic Diagnosis

The purpose of this study was to characterize the incidence and diagnostic features of amyloidosis and other diseases found at necropsy in captive trumpeter swans ( Cygnus buccinator). A search of Iowa State University's Department of Veterinary Pathology and Veterinary Diagnostic Laboratory databases yielded 31 trumpeter swan ( C. buccinator) necropsy cases from captive swans in protected habitats. Eleven of the 31 birds had amyloid deposition most commonly in the spleen (8 of 11), liver (7 of 11), and kidney (6 of 11) and less often in the pancreas (2 of 11) and adrenal gland (2 of 11). Amyloid deposition effaced normal tissue with adjacent necrosis and hemorrhage in severe cases. Amyloidosis was most often diagnosed in February and March. Other disease diagnoses in the trumpeter swans included aspergillosis (5 of 31, 16%); bacterial infection (5 of 31, 16%); lead toxicosis (3 of 31, 10%); gout (2 of 31, 6%); parasitic infection (2 of 31, 6%); vitamin E deficiency (1 of 31, 3%); trauma (1 of 31, 3%); and ventricular foreign body (1 of 31, 3%). Histopathologic, toxicologic, and microbiologic analyses did not define an etiologic diagnosis in the deaths of 9 trumpeter swans. In these cases, necropsy lesions included emaciation (5 of 9), enteritis (1 of 9), pulmonary hemorrhage (1 of 9), and no lesions (3 of 9). The number of trumpeter swan case submissions was greatest in January and February. This study provides a reference for veterinary diagnosticians concerning incidence and diagnostic features of amyloidosis and other diseases in captive trumpeter swans of the midwestern United States.

First Flight of Trumpeter Swans, Cygnus buccinator

The Auk ◽  
1952 ◽  
Vol 69 (4) ◽  
pp. 462-462
Author(s):  
James R. Simon
Keyword(s):  
Cygnus Buccinator ◽  
Trumpeter Swans

Trumpeter swan behaviour at spring-migration stopover areas in southern Alberta

2001 ◽  
Vol 79 (11) ◽  
pp. 2036-2042 ◽  
Author(s):  
Jalene M LaMontagne ◽  
Robert MR Barclay ◽  
Leland J Jackson
Keyword(s):  
Time Budget ◽  
Spring Migration ◽  
Energy Reserves ◽  
Cygnus Buccinator ◽  
Behavioural Study ◽  
Southern Alberta ◽  
Wintering Areas ◽  
Trumpeter Swan ◽  
Trumpeter Swans ◽  
Dominant Activity

The use of breeding and wintering areas has been a focus of studies on trumpeter swans (Cygnus buccinator), but the importance of migration stopover areas has been overlooked. We conducted a behavioural study to assess trumpeter swans' use of spring-migration stopover areas in southern Alberta, Canada. Adult swans foraged for 48% of the day, preened for 12%, rested for 26%, and were involved in locomotion for 14% of the time. Cygnets foraged for 49% of the day, preened for 15%, rested for 19%, and were involved in locomotion for 18% of their time. Temperature had a significant effect on the time budget of trumpeter swans: below –4°C, foraging diminished and sleeping was the dominant activity. The dominant activity of trumpeter swans in spring-migration stopover areas was foraging. We therefore suggest that these stopover areas are important for building the energy reserves required for successful migration and breeding.

scholarly journals Response of wild Trumpeter Swan (Cygnus buccinator) broods to wetland drawdown and changes in food abundance

2016 ◽  
Vol 129 (4) ◽  
pp. 374 ◽  
Author(s):  
Harry G. Lumsden ◽  
Vernon G. Thomas ◽  
Beren W. Robinson
Keyword(s):  
Feeding Activity ◽  
Late Summer ◽  
Local Environment ◽  
Nutritional Content ◽  
Cygnus Buccinator ◽  
Risk Of Predation ◽  
Local Abundance ◽  
Calcium Phosphorus ◽  
A Site ◽  
Trumpeter Swans

A brief period of drawdown can stimulate wetland productivity and enhance the attractiveness of a site for breeding Trumpeter Swans (Cygnus buccinator) by providing a nutrient pulse. Drawdown of a pond in Aurora, Ontario, lasting about 8 weeks in late summer and fall 2009 followed by re-flooding increased the abundance of invertebrates, especially snails, in the following year. This response was ephemeral, lasting 1 year. Wild Trumpeter Swans and their cygnets responded by selective feeding the year after drawdown, despite the risk of predation by Snapping Turtles (Chelydra serpentina). There was a strong correlation between the feeding activity of two cygnets and the local abundance of snails in the pond in 2010. The nutritional content, especially protein, calcium, phosphorus, and magnesium, of a variety of abundant foods satisfied the requirements for skeletal growth and development and was higher than that of available commercial duck grower rations. The responsive feeding behaviours of the cygnets are typical of specific appetitive behaviour and suggest that swans rapidly exploit unpredictable nutrient fluxes in their local environment.

scholarly journals Trumpeter Swan (Cygnus buccinator) behaviour, interactions with Snapping Turtles (Chelydra serpentina), and their Pleistocene history

2013 ◽  
Vol 127 (2) ◽  
pp. 138
Author(s):  
Harry G. Lumsden
Keyword(s):  
Ice Sheet ◽  
Chelydra Serpentina ◽  
Snapping Turtle ◽  
Cygnus Buccinator ◽  
Snapping Turtles ◽  
Trumpeter Swan ◽  
Trumpeter Swans

Snapping Turtles (Chelydra serpentina) prey on and injure Trumpeter Swan (Cygnus buccinator) cygnets. Adult Trumpeter Swans stamp on and attack turtles, and this sometimes saves the lives of cygnets. Stamping behaviour, duetting, clamouring, and mobbing are directed at predators. The stamping behaviour may be derived from the water treading display. During the Pleistocene ice sheet maxima, all Trumpeter Swans east of the Rockies nested within the range of the Snapping Turtle. Snapping Turtle predation may have selected for the stamping behaviour.

scholarly journals Concentration of Trumpeter Swans, Cygnus buccinator, in British Columbia in Winter

The Auk ◽  
1950 ◽  
Vol 67 (3) ◽  
pp. 381-382
Author(s):  
John P. Holman
Keyword(s):  
British Columbia ◽  
Cygnus Buccinator ◽  
Trumpeter Swans
Sign in / Sign up

Export Citation Format

Share Document