Cover
Front matter OB Vol 18#1 Apr2000
Ontario Birds
Contents
An Apparent Dunlin x White-rumped Sandpiper Hybrid
Kevin A. McLaughlin and Alan Wormington
The November 1999 Cave Swallow Invasion in Ontario and Northeastern North America
Bob Curry and Kevin A. McLaughlin
Plumage and Molt Terminology
Ron Pittaway
Photo Quiz
Photo Quiz
Willie D'Anna