. The Canadian field-naturalist. '74 The Canadian Field-Naturalist Vol. 93. Figure 2. Typical terrain north of site 4. and resting on ledges. A flat area on top of the nunatak was free of snow but not occupied by birds. Site 2. Clarence Head 39B; NW corner, 526000, 8537400; 450 m; 14 km; 12 August; WCM. Twelve to 15 birds seen near top of cliff. Four large young birds visible by eye in nests on excrement-stained ledges. No unhatched eggs were visible through binoculars. Observations were made from an icefield looking down on the site across a gully. Site 3. Talbot Inlet 39C and part of 39D; Th
. The Canadian field-naturalist. '74 The Canadian Field-Naturalist Vol. 93. Figure 2. Typical terrain north of site 4. and resting on ledges. A flat area on top of the nunatak was free of snow but not occupied by birds. Site 2. Clarence Head 39B; NW corner, 526000, 8537400; 450 m; 14 km; 12 August; WCM. Twelve to 15 birds seen near top of cliff. Four large young birds visible by eye in nests on excrement-stained ledges. No unhatched eggs were visible through binoculars. Observations were made from an icefield looking down on the site across a gully. Site 3. Talbot Inlet 39C and part of 39D; Thorndike Peaks; 541200, 8565000; 600 m; 6 km; 12 August; WCM. Fifty birds in the air, resting on ledges, and taking off from ledges. Site 4. Talbot Inlet 39C and part of" 39D; Inglefield Mountains; 543600, 8597600; 600 m; 12 km; 29 June; WCM. At least 50 birds suddenly encountered when helicopter flew around corner of nunatak. Site 5. Ekblaw Glacier 39F and 39E; head of Cadogan Glacier; 549900, 8679000; between 600 and 750 m; 26 km; 15 August; TF. Thirty birds on ledges and flying around nunatak. Site 2, southwest of Smith Bay (Figure 1), is thus established as a new breeding place of the Ivory Gull. Although we have no direct evidence of breeding at the other localities, we consider it more than probable that these are also nesting sites. Nesting sites of the Ivory Gull similarly situated on nunataks well inland from the coast have been reported from southern Vestspitsbergen by Birken- majerand Skreslet( 1963) (see also L0venskiold 1964). No doubt sites of this type are used because, among other factors, they provide a haven safe from predators. Furthermore, Polar Bear {Ursus mari- timus) kills provide a major source of food for the Ivory Gull (MacDonald 1967, p. 6) and all the Ellesmere Island sites are relatively near the east coast. which, according to our observations, supports a sizable bear population, particularly in Smith Bay. Our chiefly aerial coverage of southea
Size: 1970px × 1269px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorottawafieldnaturalistsclub, bookcentury1900, bookcolle
