. The Canadian field-naturalist. 1993 ERSKiisfE: Ring-Billed Gulls in Maritime Provinces 49. Figure 2. Locations where Ring-billed Gulls reported in Tables 1-5 were sighted, Maritime Provinces. (Harrington to Bale Comeau) included direct recover- ies (, in the banding year) along the St. Lawrence River (4) and around the southern Gulf of St. Lawrence (6). Among several hundred recoveries from gulls banded near Montreal, only five direct and four indirect recoveries were in the Maritimes and none in Maine, although first-autumn recoveries blan- keted all the St. Lawrence valley and estuary
. The Canadian field-naturalist. 1993 ERSKiisfE: Ring-Billed Gulls in Maritime Provinces 49. Figure 2. Locations where Ring-billed Gulls reported in Tables 1-5 were sighted, Maritime Provinces. (Harrington to Bale Comeau) included direct recover- ies (, in the banding year) along the St. Lawrence River (4) and around the southern Gulf of St. Lawrence (6). Among several hundred recoveries from gulls banded near Montreal, only five direct and four indirect recoveries were in the Maritimes and none in Maine, although first-autumn recoveries blan- keted all the St. Lawrence valley and estuary east to Baie Comeau. The almost total absence of recoveries (from any source) in Nova Scotia (1), the south coast of New Brunswick (0), and in Maine east of 70°W (2) suggested that birds from Newfoundland did not pass through the Maritimes. Some, but perhaps only a small proportion, of those from the North Shore moved through the Maritimes. Only a minor trickle came here from the much larger stocks around Montreal and farther west, but so many more gulls breed there that even a trickle might have provided equal or greater numbers of immigrants than might be expected from the Gulf North Shore colonies. Discussion (1) Changes in numbers Ring-billed Gull numbers along Northumberland Strait in spring (personal observations) and fall (Table 4) more than doubled between the 1960s and 1980s. They also occurred regularly in fall since 1980 around the upper Bay of Fundy where none were seen in the earlier period (Table 5). No other areas had comparable data covering the fall migra- rion back through the 1960s, but the CBCs (Table 1) also showed that Ring-billed Gulls had increased where known earlier, and occurred in early winter since 1975 in many areas where they were formerly absent. Most of the monthly high counts in fall (Table 3) were also in the 1980s or late 1970s. These increases took place over the same period in which the establishment and growth of the Ring-billed Gull bree
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