Library Open Repository
Breeding of Black Swan in Tasmania
Guiler, ER (1966) Breeding of Black Swan in Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 100. pp. 31-56. ISSN 0080-4703
1966_Guiler_Bre...pdf | Download (801kB)
Available under University of Tasmania Standard License.
The breeding distribution of the Black Swan in Tasmania is given and the breeding history of the species over three years in the principal breeding area at Moulting Lagoon is described. The incubation period was found to be 39+ 2 days and cygnets fly 60 days after the appearance of juvenile plumage. Floods are the main source of egg mortality and other factors are relatively unimportant. Direct observation and statistical calculations were used to estimate the annual cygnet production. The statistical methods gave widely divergent estimates. Shooting over the breeding ground has an adverse effect upon breeding, upsetting pair formation. Restriction of this shooting has re1sulted in a greater cygnet production. Flooding and autodestruction of habitat are important factors in breeding success and recommendations for the management of the species are given.
|Keywords:||Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library|
|Journal or Publication Title:||Papers and Proceedings of the Royal Society of Tasmania|
|Page Range:||pp. 31-56|
|Additional Information:||Copyright Royal Society of Tasmania|
|Date Deposited:||29 May 2012 03:51|
|Last Modified:||18 Nov 2014 04:37|
|Item Statistics:||View statistics for this item|
Repository Staff Only (login required)
|Item Control Page|