. The Canadian field-naturalist. Figure 1. Map showing Coburg Island, the Northwater Polynya (shaded region between Coburg Island and Greenland), and the range of breeding Atlantic Puffin colonies for both F. a. arctica and F. a. nau- 0 5 10 UujJ I Km. Marina Peninsula Cambridge Point Princess Charlotte Monument Figure 2. Area map of Coburg Island. Annotated locations refer to, (A) main colony; (B) Camp Beach, (C) Epic Bay; and (D) Cabin Beach. format black-and-white film, which is now archived at the Canadian Wildlife Service, Yellowknife, Northwest Territories, Canada. We report only on bird
. The Canadian field-naturalist. Figure 1. Map showing Coburg Island, the Northwater Polynya (shaded region between Coburg Island and Greenland), and the range of breeding Atlantic Puffin colonies for both F. a. arctica and F. a. nau- 0 5 10 UujJ I Km. Marina Peninsula Cambridge Point Princess Charlotte Monument Figure 2. Area map of Coburg Island. Annotated locations refer to, (A) main colony; (B) Camp Beach, (C) Epic Bay; and (D) Cabin Beach. format black-and-white film, which is now archived at the Canadian Wildlife Service, Yellowknife, Northwest Territories, Canada. We report only on bird species observed from land or while boating near shore. We observed 17 bird species on Coburg Island in 1998; at least seven of which nested on Coburg Island (Table 1). Three of these species nested solely on Princess Charlotte Monument or on the cliff of the Marina Peninsula 100 m from the Monument (Northern Fulmar, Atlantic Puffin, Common Eider; Table 1). Northern Fulmar Fulmarus glacialis This species was commonly observed flying in the vicinity of the main colony. However, nest sites were only found on the Monument (n = 323 pairs) and adjacent cliffs of the Marina Peninsula (n = 30 pairs). Most nested high on the cliffs (range: 30- 200 m in elevation), but ca. 100 pairs nested on steep vegetated slopes at the base of the Monument's main tower. Nest sites were occupied through July and August. Mallard Anas platyrhynchos One adult male was observed. Although at the extreme northern range limit for Canadian Mallards, Mallards nest on the southwest coast of Greenland 500-800 km to the southeast of Coburg Island (Boertmann 1994). Common Eider Somateria mollissima Seen regularly in flocks (25-100 individuals) throughout July and August. Males consistently out- numbered females about 15:1 throughout the sum- mer. Common Eiders were regularly seen close to glacial run-off creeks in Epic Bay. Four nests were found at the base of the Monument in 1988. King Eider Somateria spectabili
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