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
As to be expected in this last week of May, nocturnal migration was the most intense of the entire spring season. The biggest night was 27-28 May when an estimated 70 birds flew past the monitoring station. While these numbers would be
Sixty-five million years ago, an asteroid, 14 kilometers in width, struck the earth with the force of more than a million atomic bombs. Three-quarters of life on earth was obliterated, including all the dinosaurs. This was the fifth, and the last of
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
Authors: Bradley J. Bergstrom, Matthew D. Johnson, Jared C. Harris, and Thomas W. Sherry Year: 2019 Publication: Journal of Field Ornithology Publication Link: https://onlinelibrary.wiley.com/doi/abs/10.1111/jofo.12294 Access: Subscription Keywords: energy stores, fasting, Neotropical migrant, winter ecology, total-body electrical conductivity (TOBEC) Abstract: Most small birds
Authors: William J. Horton, Matthew Jensen, Aswathy Sebastian, Craig A. Praul, Istvan Albert, & Paul A. Bartell Year: 2019 Publication: Scientific Reports Publication Link: https://www.nature.com/articles/s41598-019-41252-8 Access: Open Keywords: Many birds undertake long biannual voyages during the night. During these times of the
Authors: Jessica E. Deakin, Christopher G. Guglielmo, and Yolanda E. Morbey Year: 2019 Publication: The Auk Publication Link: https://academic.oup.com/auk/advance-article-abstract/doi/10.1093/auk/ukz017/5454780 Access: Subscription Keywords: migration, migratory restlessness, Nearctic–Neotropical songbird, protandry, radio telemetry, seasonal timing Abstract: Most seasonally migrating songbirds exhibit protandry, whereby males arrive
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