. Breeding birds of Ontario : nidiology and distribution. Birds; Birds; Birds. Sharp-tailed Sparrow, Ammodramus caudacutus (Gmelin) Nidiology RECORDS 2 nests representing 1 provincial region. Two nests of this marsh-breeding sparrow have been found in the province, both in the summer of 1942, and both in the same general area on the southwest coast of James Bay. Both nests were near the bay: the first nest, containing 4 eggs, was found at Fort Albany, in a grassy area in a clearing along a moist ditch, on 25 June, by S. C. Downing; the second nest, also containing 4 eggs, was found at the mout
. Breeding birds of Ontario : nidiology and distribution. Birds; Birds; Birds. Sharp-tailed Sparrow, Ammodramus caudacutus (Gmelin) Nidiology RECORDS 2 nests representing 1 provincial region. Two nests of this marsh-breeding sparrow have been found in the province, both in the summer of 1942, and both in the same general area on the southwest coast of James Bay. Both nests were near the bay: the first nest, containing 4 eggs, was found at Fort Albany, in a grassy area in a clearing along a moist ditch, on 25 June, by S. C. Downing; the second nest, also containing 4 eggs, was found at the mouth of the Nettichi River, at the edge of a brackish pool on the coast, on 16 July, by C. E. Hope. The first nest was several centimetres off the ground and supported by dead, coarse grass; the nest and eggs (ROM 3948) and female adult were collected. The second nest was on the ground in short grass; the nest and eggs were collected (ROM 3949). Both nests had deep bowls and incurved rims, and at least 1 of them had its opening positioned vertically so that its depth was more or less parallel with the ground. They were formed of coarse grasses and sedges on their exterior, and their linings were of fine grasses. The two nests had outside diameters of 9 and 10 cm ( and inches), inside diameters of and 5 cm ( and 2 inches), outside depths of 10 and 7 cm ( and inches), and inside depths of 7 and 4 cm ( and inches). Breeding Distribution In Ontario, the Sharp-tailed Sparrow (Fig. 164A) appears to be exclusively a maritime breeding species. The first breeding evidence obtained in the province came from Attawapiskat in 1939, and the first nests were found in 1942, also along the southern James Bay coast (Baillie, 1960). Later exploration revealed that it is found mainly along the James Bay coast, but is also found along the shores of Hudson Bay at least as far west as Winisk (Manning, 1952; Schueler et al., 1974). A disjunct inland population breeds in the pr
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