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New species added to the Checklist of the Birds of Ontario: 1983-2016
Mike V.A. Burrell and Kenneth G.D. Burrell

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Changes in Ontario bird populations: 1983-2016
Michael D. Cadman, Andrew R. Couturier, Jon D. McCracken, Donald A. Sutherland, Kenneth F. Abraham, Lyle E. Friesen, Christian A. Friis, Kevin C. Hannah, Shawn W. Meyer, David J. Moore, Mark K. Peck, Douglas C. Tozer, and D.V. Chip Weseloh

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Reviewing the Records
Mark Peck

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Ontario birding: a qualitative study on its practice in the field
Gavan P.L. Watson

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Birding in the 'Old Days' (pre-1980)
Bob Curry

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Embracing change-the evolution of Ontario birding: mid-1990s to 2016
Jody Allair

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Changes in ornithological methods in the past 33 years
Ken Abraham, Chris Risley, and Chip Weseloh

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Ontario Bird Records Committee Report for 2015
Mike V.A. Burrell and Barbara N. Charlton

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Changes in abundance of migrant warblers at Port Weller, Ontario, from 1993-1995 to 2013-2015
John E. Black and Tara L. Crewe

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Colour morphs, downy and juvenile plumages of Trumpeter and Mute Swans
Harry G. Lumsden

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In Memoriam Dr David JT Hussell
Jon D. McCracken