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Ring-billed Gull

Scientific Name: Larus delawarensis

Wikipedia Page

Avibase

Dendroica

Cornell Lab of Ornithology

Thresholds:

GlobalInformation25,500
Regional/ContinentalInformation25,500

Global

1% of the global population estimate. This threshold is used to identify trigger species and IBAs under categories A4i/ii and A4iv.

Regional/Continental

1% of the regional/continental population estimate.

Leslie Street Spit (ON038)
Number Year Season
100,0002011Spring
110,0001986Summer
149,1281984Summer
Presqu'ile Provincial Park (ON004)
Number Year Season
50,0002014Spring
20,0002013Spring
50,0001991Spring
63,608 - 75,2241990Spring
138,8341990Summer
Wildwood Gull Roost (ON045)
Number Year Season
40,0001997Summer
110,0001994Fall
100,0001993Fall
50,0001992Fall
50,0001991Fall
Île Deslauriers (QC126)
Number Year Season
95,7782009Spring
102,0002006Spring
101,6202003Spring
103,3542000Spring
103,3342000Summer
97,5341997Spring
97,5341997Summer
97,5821994Spring
97,5821994Summer
94,4021991Spring
94,4021991Summer
4,5001989Summer
10,6801981Summer
9,9221980Summer
Port Colborne (breakwater and mainland) (ON019)
Number Year Season
71,0741999Spring
92,1801990Summer
Pittock Reservoir (ON027)
Number Year Season
86,0001992Fall
56,0001989Fall
Hamilton Harbour Waterbird Colonies (ON020)
Number Year Season
79,2421990Summer
Lower Detroit River (ON047)
Number Year Season
68,0421990Summer
01977Summer
Long Point Peninsula and Marshes (ON001)
Number Year Season
23,0002014Spring
65,0001992Summer
16,000 - 40,0001992Spring
Île de la Couvée (QC127)
Number Year Season
30,4262003Spring
21,5022000Spring
21,5022000Summer
41,7401997Spring
41,7401997Summer
60,1921994Spring
60,1921994Summer
56,2281990Spring
56,2261990Summer
30,0001989Summer
32,1861982Summer
28,6621981Summer
29,4641980Summer
Limestone Islands (ON052)
Number Year Season
40,6061989Summer
26,8001980Summer
Kaweenakumik Lake (MB007)
Number Year Season
1,0032012Summer
4,0001995Other
8,0001986Summer
40,0001985Summer
24,0001979Summer
Niagara River Corridor (ON002)
Number Year Season
4,0002011Fall
10,0002010Fall
23,0002009Winter
32,0001998Summer
18,000 - 27,0001995Fall
Réserve nationale de faune des Îles-de-Contrecoeur (QC125)
Number Year Season
19,6582009Spring
26,8182006Spring
25,7042003Spring
22,5362000Spring
26,4122000Summer
28,1981997Spring
31,7641997Summer
22,7541994Summer
19,2941991Spring
22,7181991Summer
4,6821981Summer
12,5081980Summer
Eastern Lake St. Clair (ON012)
Number Year Season
22,1772001Winter
15,9421999Winter
20,1231993Winter
Miquelon Lake (AB071)
Number Year Season
19,8501985Other
20,1741976Summer
Barrage de Beauharnois (QC131)
Number Year Season
19,6422009Spring
20,0322006Spring
16,1182000Summer
10,0001999Summer
12,3121997Summer
10,8981994Summer
14,0301992Summer
14,0641991Summer
Riverton Sandy Bar (MB091)
Number Year Season
1702012Summer
20,0001991Summer