John F. Kearney & Associates
Social and Environmental Research
Nocturnal migration diminished throughout the first week of June to almost no activity by the end of the week. The most common bird was the Common Yellowthroat (11 estimated birds). Among the late arrivals were Canada Warbler (2 estimated birds) and Common
There was steady nocturnal migration this week. The weather continued as cold and wet but light south or southwest winds were prevalent during most nights of the week. In most years, the third week of May marks a time when many species
The return of rain, wind, and cool temperatures resulted in little nocturnal migration this week. Similar to one night in the previous week, the only notable migration occurred on the night of 11-12 May when strong winds blew out of the northwest
There was nocturnal migration recorded during six out of seven nights this week, the most consistent pattern of movement for this spring to date. The largest movement occurred on the night of 7-8 May when veering winds from southwest to northwest over
Despite continuing strong winds, the pace of migration picked up during the last week of April. The largest movement of the week was the night of 25-26 April when near calm winds (< 10 km/hr) persisted throughout the night. An estimated 34
High winds and rain every night except the night of 17-18 April suppressed nocturnal migration. On that one evening of favourable weather, there was a small influx of Yellow-rumped Warblers, Savannah Sparrows, White-throated Sparrows, and Dark-eyed Juncos. Only a couple of Savannah
Twice a year, one of the greatest spectacles of nature passes over our heads as we sleep. Tens of thousands of birds in the spring, and hundreds of thousands of birds in the autumn, fly over the Tri-County area. Continent-wide, the count
Nocturnal migration monitoring began on the evening of April 1st. High winds for the first five days of the week resulted in few call detections except for small numbers of Canada Geese that were either local breeding birds or a stragglers that