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Submitted on: 20 October 2000.
Revised on: 25 December 2000.
Accepted on: 19 January 2001.
___________________Avian Conservation and Ecology
Submitted on: 29 April 2017.
Revised on: 08 July 2017.
Accepted on: 30 August 2017.
___________________Avian Conservation and Ecology
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Submitted on: 26 June 2012.
Revised on: 17 October 2012.
Accepted on: 24 November 2012.
___________________Avian Conservation and Ecology
Submitted on: 12 May 2023.
Revised on: 07 June 2023.
Accepted on: 13 July 2023.
___________________Avian Conservation and Ecology
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