. Breeding birds of Ontario : nidiology and distribution. Birds; Birds; Birds. Lesser Scaup, Aythya affinis (Eyton) Nidiology RECORDS 7 nests representing 4 provincial regions. Breeds in sedge, cattail, and heath-bog borders of lakes and small islands in lakes. Nests were placed 15 to cm (6 to 10 inches) above water in leatherleaf bushes and sedge clumps that formed cover 51 to 61 cm (20 to 24 inches) in height. Water depth under 1 nest was cm (12 inches). Nests were situated as far as 21 m (70 ft) from open water. One nest was placed 3 m (10 ft) from a nest of blue-winged teal and a
. Breeding birds of Ontario : nidiology and distribution. Birds; Birds; Birds. Lesser Scaup, Aythya affinis (Eyton) Nidiology RECORDS 7 nests representing 4 provincial regions. Breeds in sedge, cattail, and heath-bog borders of lakes and small islands in lakes. Nests were placed 15 to cm (6 to 10 inches) above water in leatherleaf bushes and sedge clumps that formed cover 51 to 61 cm (20 to 24 inches) in height. Water depth under 1 nest was cm (12 inches). Nests were situated as far as 21 m (70 ft) from open water. One nest was placed 3 m (10 ft) from a nest of blue-winged teal and another was 30 m (100 ft) from a nest of redhead. Nest structures were of interwoven dead and living sedge stems. They were lined with reeds, grasses, mosses, leaves, feathers, and down, and were sometimes canopied. Inside diameter of 1 nest was 19 by cm ( by inches). EGGS 7 nests with 10 to 12 eggs; 10E (3N), HE (2N), 12E (2N). One nest contained 11 eggs of lesser scaup and 2 eggs of redhead. INCUBATION PERIOD 1 nest, 23 days. EGG DATES 7 nests, 27 May to 11 July (11 dates); 4 nests, 5 June to 17 June. Breeding Distribution Although the lesser scaup is mainly a western breeding species, it has probably always nested in Ontario in small numbers because records exist back to the turn of the century. The species is very scarce in the province during the breeding season, and the few records available give only a poor idea of the full extent of its range. It appears, however, to be very thinly scattered as far north as Cochrane in the east and near the Hudson Bay coast in the west, and it possibly nests throughout the 79. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Peck, George K; James, Ross, 1943-; Royal Ontario Museum. Toronto : Royal Ontario Museum
Size: 1973px × 1266px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade19, bookleafnumber95, booksubjectbirds
