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Potential Effects of Offshore Wind Turbines on Millions of Birds Migrating Across Eastern Lake Ontario near Main Duck Island

A Scientific Evaluation prepared for the Kingston Field Naturalists

Main Duck Island is part of a chain of islands in eastern Lake Ontario that stretches from Prince Edward Point near Picton, Ontario, to Stony Point, New York. It is 209 hectares (518 acres) in size. Main Duck Island is currently uninhabited, though it is the site of a fully automated lighthouse. The island was acquired by Parks Canada in 1977 as a nature reserve.
According to Parks Canada:

The island chain is a migration corridor for birds. During annual spring and fall migrations, numerous species have been counted, two of which are designated “Canadian Species at Risk” by the Committee on the Status of Endangered Wildlife in Canada. Henslow’s Sparrow is in the ‘endangered’ category and the short-eared owl is in the ‘special concern’ category.

Using information from Prince Edward Point and Ostrander Point at the western end of this migration corridor, it is estimated that over 12 million migratory birds pass through this area each year.

Main Duck Island is now situated between two proposals for large offshore windfarms. The Wolfe Island Shoals project proposes 130 turbines north of Main Duck Island. The Trillium Power Wind 1 project proposes 138 turbines south of Main Duck Island.

The reports of bird casualties filed by the Wolfe Island Wind Farm of 86 turbines, indicate that the windfarms proposed north and south of Main Duck Island will have a very negative impact on birds passing through the migration corridor.

Download original document: “Potential Effects of Wind Turbines on Bird Migration Near Main Duck Island [1]