Christmas Bird Count

Tommy Thompson Park Route, Toronto, 20 December 2009

Tommy Thompson Park CBC Team Left to right: Ralph Toninger, Toronto and Region Conservation (TRCA), John Carley, Jean Iron, and Carl Hills on 20 Dec 2009 at Ashbridges Bay Wastewater Treatment Plant. Photo by Peter Lister.


Adult Thayer's Gull in winter (basic) plumage. The mantle shade was slightly darker than the nearby Herring Gulls. Its eyes were dull greenish-yellow and were darker than the bright lemon yellow of the Herring Gulls. Ashbridges Bay Wastewater Treatment Plant in Toronto on 20 December 2009.


The undersides of the primaries were silvery white with the grey shadow of the black upper primary markings. Ashbridges Bay Wastewater Treatment Plant on 20 December 2009.