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Front matter OB Vol 31 #1 Apr2013
Ontario Birds

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Back matter OB Vol 31 #1 Apr2013
Ontario Birds

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Black-tailed Gull New to Ontario
Brandon Holden

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Flight Times and Abundance of Three Shorebird Species Staging near Chickney Channel, James Bay, Ontario, Summer 2012
Christian Friis, Kenneth G. Burrell, and Stuart Mackenzie

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A Migration of Juvenile Bonaparte's Gulls at Wheatley Harbour, Ontario
Alan Wormington

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Unusual Food-caching Site for a Red-breasted Nuthatch
Erica Dunn

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Variable Roosting Habits of Great Egrets at Cornwall and Ottawa/Gatineau
D.V. Chip Weseloh, Rod Dubois, Bruce Di Labio, and Bob Scranton

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Isotherms and Winter Distribution of Trumpeter Swans
Harry G. Lumsden

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Mysterious Deaths of European Starlings at Hamilton/Burlington
Marlene Hart