. Breeding birds of Ontario : nidiology and distribution. Birds; Birds; Birds. Gray-cheeked Thrush, Catharus minimus (Lafresnaye) Nidiology RECORDS 2 nests representing 1 provincial region. Only 2 nests of the Gray-cheeked Thrush have been reported in the province to date; both were in extreme northern Ontario and they were separated by 24 years. The first nest, found on 2 July 1940, was in an area of stunted willows and was positioned at the base of a willow, 20 cm (8 inches) above ground. It had an exterior of weed stalks and twigs, and was neatly lined with fine grasses. The nest had an out
. Breeding birds of Ontario : nidiology and distribution. Birds; Birds; Birds. Gray-cheeked Thrush, Catharus minimus (Lafresnaye) Nidiology RECORDS 2 nests representing 1 provincial region. Only 2 nests of the Gray-cheeked Thrush have been reported in the province to date; both were in extreme northern Ontario and they were separated by 24 years. The first nest, found on 2 July 1940, was in an area of stunted willows and was positioned at the base of a willow, 20 cm (8 inches) above ground. It had an exterior of weed stalks and twigs, and was neatly lined with fine grasses. The nest had an outside diameter of 12 cm ( inches), inside diameter of 7 cm ( inches), outside depth of 7 cm ( inches), and inside depth of cm ( inches). It contained 3 slightly incubated eggs (ROM 3903). The second nest, found on 6 July 1964, was in a dense spruce/alder/willow bog with sphagnum moss underfoot and with a few areas of open water. The nest was at a height of m (5 ft) in a 3 m (10 ft) spruce. It had a deep cup, was composed of dead weeds, and was lined with fine dead grasses and a little moss. It contained 3 recently hatched young. Breeding Distribution The Gray-cheeked Thrush (Fig. 150A) breeds across Canada generally at more northerly latitudes than in Ontario. The western populations extend into the extreme northwest of the province, but because there are so few summer records we have only an incomplete outline of its range. The first nesting and breeding records were secured at Fort Severn in 1940 (Baillie, 1961), where the species was present in considerable numbers. A few individuals have been seen as far east as Winisk, and at Aquatuk Lake in the Sutton Ridges where the second nest record was obtained (Schueler et al., 1974). None were seen in the Ridges at Aquatuk Lake in 1980 (Dick, J. A., S. V. Nash, and B. E. Tomlinson, 1980, Abundance and Natural History of Birds at Aquatuk Lake, unpubl. ms. in ROM Library), or at Kiruna Lake, 80 km southeast of Wini
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