. The Canadian field-naturalist. 1988 LOCK: Ring-billed Gulls in Atlantic Canada 629. 70° 68° 66° 64° 62° Figure \. Ring-billed Gull colonies in New Brunswick and Prince Edward Island. Colony numbers refer to Table 1. new , colony was discovered on Cascumpec Sandhills but it had disappeared by 1986. As late as 1972 the only known colony of Ring- billed Gulls in the Maritimes was that in Bathurst Harbour, which then had 119 nests (P. Pearce, MNRS). Since then, the Maritime provinces' breeding population has increased to almost 1700 pairs, a mean annual increase of close to 21%. Population
. The Canadian field-naturalist. 1988 LOCK: Ring-billed Gulls in Atlantic Canada 629. 70° 68° 66° 64° 62° Figure \. Ring-billed Gull colonies in New Brunswick and Prince Edward Island. Colony numbers refer to Table 1. new , colony was discovered on Cascumpec Sandhills but it had disappeared by 1986. As late as 1972 the only known colony of Ring- billed Gulls in the Maritimes was that in Bathurst Harbour, which then had 119 nests (P. Pearce, MNRS). Since then, the Maritime provinces' breeding population has increased to almost 1700 pairs, a mean annual increase of close to 21%. Population History — Labrador The earliest record of Ring-billed Gulls breeding in Newfoundland Labrador was Macoun's (1900) statement, on the authority of A. P. Low, that they bred in the vicinity of Hamilton Inlet. Townsend and Allen (1907) also listed Ring-billed Gulls as a breeding species, referring to Low, though in their own brief visit to the coast they did not see them. Austin (1932) questioned Low's identification of these gulls and he did not list them as breeding in Labrador. The present breeding of Ring-billed Gulls in Labrador only around Hamilton Inlet suggests that Low's early record was probably correct. The first modern reference to breeding Ring- bills in Labrador was L. M. Tuck's report {in Todd 1963) of their breeding in Lake Melville. No specific location was given. The first specific colony record was a 1970 report to the Newfoundland Nest Record scheme (NNRS) by D. Gillespie, which listed 90-100 nests on Bear Island in Lake Melville (54°00'N, 58°53'W). The colonies listed in Table 2 were discovered during the aerial inspection of the Labrador coast in 1978 and they were counted in 1979 and 1980. No gulls bred on Bear Island at that time and the gulls on an islet close to it were identified as Herring Gulls. The few historical data on the breeding of Ring- billed Gulls in Labrador leave it uncertain whether the population is stable or increasing; however, i
Size: 1635px × 1527px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorottawafieldnaturalistsclub, bookcentury1900, bookcolle
