Submitted on: 20 October 2016.
Revised on: 14 November 2016.
Accepted on: 26 November 2016.
___________________Avian Biology Research---SAGE PUBLICATIONS LTD
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Submitted on: 20 November 2015.
Revised on: 24 December 2015.
Accepted on: 13 February 2016.
___________________Avian Biology Research---SAGE PUBLICATIONS LTD
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Submitted on: 05 December 2020.
Revised on: 12 January 2021.
Accepted on: 04 March 2021.
___________________Avian Biology Research---SAGE PUBLICATIONS LTD
Submitted on: 09 May 2014.
Revised on: 02 July 2014.
Accepted on: 18 August 2014.
___________________Avian Biology Research---SAGE PUBLICATIONS LTD
Submitted on: 26 July 2009.
Revised on: 07 November 2009.
Accepted on: 22 December 2009.
___________________Avian Biology Research---SAGE PUBLICATIONS LTD
Submitted on: 24 June 1998.
Revised on: 01 October 1998.
Accepted on: 14 October 1998.
___________________Avian Biology Research---SAGE PUBLICATIONS LTD
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