I observed 1 singing White-eyed Vireo at around 930 this morning in the first patch of streamside willows near the University Ave. W. entrance to Hillside Park in Waterloo. I did not relocate the bird when I returned to the spot at 1130, but vocalizations were beginning to die down at mid-day. Other notable birds included Olive-sided, Willow, and Yellow-bellied Flycatchers, and Mourning, Canada, and Wilson's Warblers. Directions: The University Ave. W. entrance to Hillside Park is immediately west of the interchange with Highway 85 (formerly Hwy 86). Park in the drive of the water treatment plant, cross the bridge, and the path begins shortly on your right. -- *********************************** Christopher T. Burris, Ph.D. Associate Professor of Psychology St. Jerome's University Waterloo, ON N2L 3G3 CANADA ***********************************