. The Canadian field-naturalist. Natural history. 2002 HiPFNER, Gilchrist, Gaston, and Cairns: Common Eiders in Digges Sound 23. GINGI ISLAND Figure 1. Map of the southern Digges Sound region showing the islands that were surveyed for Common Eiders in 1999. saw nothing to suggest that it had been on any islands that we visited. Methods We surveyed six islands in the Nuvuk Islands region on 19 July 1999, including some of those on which the highest numbers of nests were found dur- ing surveys in the 1980s (in particular, the South Skerries; see Table 1, Figure 1). Results of our sur- veys shoul
. The Canadian field-naturalist. Natural history. 2002 HiPFNER, Gilchrist, Gaston, and Cairns: Common Eiders in Digges Sound 23. GINGI ISLAND Figure 1. Map of the southern Digges Sound region showing the islands that were surveyed for Common Eiders in 1999. saw nothing to suggest that it had been on any islands that we visited. Methods We surveyed six islands in the Nuvuk Islands region on 19 July 1999, including some of those on which the highest numbers of nests were found dur- ing surveys in the 1980s (in particular, the South Skerries; see Table 1, Figure 1). Results of our sur- veys should be comparable to those in the 1980s, because similar techniques were used; the one exception was that the number of nests was only estimated, not counted, on South Skerry #1 in 1981 (see Table 1). In 1999, each island was surveyed on foot by a crew of 3 who walked 5 m apart. As the islands were too large to be covered in one sweep, the crew member at the outside of the line marked the extent of each pass with rocks. The crew then turned around and returned, counting nests on the opposite side of the line. In this manner, islands were completely surveyed with little risk of nests being missed or counted more than once. A nest was counted if it had a well-defmed cup with down; in this region, down is placed in the nest bowl after lay- ing has been initiated (H. G. Gilchrist unpublished), so that downy nest cups without eggs represent nest- ing attempts that have failed. When a nest was found, its contents (, empty, two eggs, three eggs and one duckling, etc.) were called out to one crew member who recorded the information. We thus obtained information on clutch sizes, and a crude indication of the timing of hatching. We also mea- sured the length and maximum breadth of 100 eggs in 36 clutches. We attempted to survey island groups to the north on 20 July, but rough seas and thick fog hampered our efforts. We returned to South Skerry #1 late in the afternoon on 20 July, in or
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