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Bonaparte's Gull

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Bonaparte's Gull

Scientific Name: Chroicocephalus philadelphia

Wikipedia Page

Avibase

Dendroica

Cornell Lab of Ornithology

Thresholds:

GlobalInformation3,900
Regional/ContinentalInformation3,900

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.

Niagara River Corridor (ON002)
Number Year Season
7,2632018Fall
3,316 - 6,5742017Winter
4,000 - 6,9832017Fall
3,500 - 9,3132016Winter
3,000 - 3,1462016Fall
4,216 - 8,0002015Winter
7,200 - 11,7142015Fall
4,4852014Fall
4,200 - 5,5732013Winter
3,200 - 10,0002013Fall
7,905 - 8,0002013Spring
3,412 - 12,0002012Winter
9,6632012Spring
3,946 - 10,0002011Winter
4,000 - 8,0002011Fall
4,000 - 10,0002010Winter
5,000 - 30,0002010Fall
7,0002010Spring
7,600 - 70,0002009Winter
3,500 - 70,0002009Fall
3,5992008Winter
3,000 - 5,1972008Fall
4,000 - 5,2402007Winter
3,228 - 6,0002006Winter
4,000 - 10,0002006Fall
5,000 - 10,0002005Fall
3,7692004Winter
5,0002004Fall
3,000 - 10,0002003Winter
4,580 - 4,6002003Fall
3,192 - 50,0002002Winter
4,9502002Spring
4,140 - 10,0002001Winter
5,0002001Fall
4,295 - 15,5002000Winter
3,000 - 10,8752000Fall
4,100 - 15,0001999Winter
3,0001999Fall
4,2401999Spring
3,920 - 10,6201998Winter
4,5501998Fall
4,2501998Spring
6,215 - 12,4401997Winter
11,200 - 50,0001997Spring
8,000 - 20,3181996Winter
16,2701996Spring
10,1341995Winter
5,000 - 100,0001995Fall
22,4681994Winter
3,190 - 4,0001993Winter
5,000 - 9,6181992Winter
3,000 - 40,0001991Winter
7,024 - 40,0001990Winter
6,4001990Fall
50,0001979Fall
Quoddy Region (NB037)
Number Year Season
3,000 - 5,0002018Fall
3,0002017Fall
5,0002017Summer
3,0002016Fall
5,0002015Fall
4,000 - 5,0002014Fall
3,000 - 5,0002012Fall
3,0002011Winter
3,000 - 6,0002011Fall
6,0002010Fall
6,0002008Fall
4,0002005Fall
6701999Winter
6,0301998Winter
3,500 - 5,3001998Fall
25,0001997Fall
10,0001985Fall
Long Point Peninsula and Marshes (ON001)
Number Year Season
5,000 - 6,4402017Fall
5,000 - 9,0202016Fall
3,005 - 4,2002015Fall
6,000 - 6,0262014Fall
3,0002014Spring
5,016 - 11,2002013Fall
3,680 - 8,7002012Fall
4,205 - 8,0052011Fall
3,500 - 3,7002011Spring
5,250 - 10,6002010Fall
3,3222010Spring
3,200 - 4,1912009Fall
3,008 - 5,2672009Spring
3,100 - 4,9002008Fall
3,040 - 13,0342007Fall
4,000 - 5,6002006Fall
3,454 - 8,8102005Fall
3,000 - 7,5002004Fall
6,0002002Fall
3,200 - 3,5001999Fall
3,8001999Spring
8,0001998Fall
3,000 - 3,5001997Fall
3,0021997Spring
5,0001996Fall
3,000 - 20,0001995Spring
3,000 - 15,0001994Fall
3,1001994Spring
3,000 - 6,0001993Fall
3,000 - 3,2001993Spring
4,300 - 4,5001992Fall
8,000 - 20,0001992Spring
4,000 - 17,0001991Fall
4,500 - 6,0001991Spring
3,000 - 10,0001990Fall
Greater Rondeau Area (ON007)
Number Year Season
5,0002017Fall
4,5002016Fall
4,0002016Spring
3,000 - 6,0002015Fall
15,0002014Fall
3,0002012Spring
5,0002011Spring
10,0002009Spring
3,0002007Fall
Point Pelee (ON006)
Number Year Season
9,0002015Fall
6,000 - 7,5002014Fall
15,0001992Fall
Prince Edward County South Shore (ON003)
Number Year Season
4,500 - 5,0002018Spring
3,0002017Spring
3,150 - 10,0002015Spring
3,0002014Spring
3,000 - 15,0002012Spring
5,0002011Spring
3,000 - 5,0002009Spring
3,0002006Spring
3,000 - 5,0002005Spring
3,500 - 5,0002004Spring
3,0002002Spring
5,000 - 10,0001996Spring
Little Qualicum Estuary to Nanoose Bay (BC056)
Number Year Season
7,500 - 12,5002018Fall
3,000 - 7,6002017Fall
4,500 - 7,2502006Winter
3,0001985Winter
??Other
Active Pass (BC015)
Number Year Season
3,500 - 5,1142017Spring
6,0002013Spring
3,000 - 5,0002012Spring
3,300 - 8,0002010Spring
4,0002009Spring
4,0002008Fall
6,7952008Spring
7,0002004Fall
3,1502003Spring
7,0001998Spring
5,0001997Spring
10,0001995Fall
4,0001995Spring
6,5001994Spring
7,0001992Spring
7,5001987Spring
7,0001976Fall
Amherst Island (ON062)
Number Year Season
3,5002018Spring
8,0002016Spring
Baie Comeau (QC082)
Number Year Season
4,0002016Fall
3,5002015Fall
3,0002010Fall
3,0002003Fall
4,0001998Fall
4,000 - 5,0001996Fall
3,000 - 6,0001994Fall
4,000 - 5,0001993Fall
2,200 - 8,0001992Fall
2,000 - 5,0001991Fall
2,5001985Fall
2,000 - 6,5001984Fall
??Fall
Tadoussac (QC085)
Number Year Season
4,500 - 7,5002018Fall
3,050 - 5,4002017Fall
5,850 - 6,7002016Fall
4,7502016Summer
3,8502016Spring
6,000 - 7,2002015Fall
3,000 - 4,6002014Fall
3,000 - 6,7132013Fall
3,200 - 4,4002012Fall
3,000 - 3,5002011Fall
3,0002009Fall
3,5002005Fall
3,500 - 4,0002004Fall
3,0002003Fall
3,000 - 4,0002002Fall
3,000 - 4,0002000Fall
3,000 - 4,0001997Fall
2,0001993Fall
??Fall
Delta Marsh (MB001)
Number Year Season
6,7102018Fall
Baie des Escoumins et Grandes-Bergeronnes (QC084)
Number Year Season
3,000 - 5,2002018Fall
3,0002016Fall
3,0002015Fall
3,000 - 6,0002014Fall
6,0002013Fall
2,0001994Fall
Grand Manan Archipelago (NB011)
Number Year Season
6,0001998Winter
Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017)
Number Year Season
4,000 - 5,5002013Spring
Presqu'ile Provincial Park (ON004)
Number Year Season
3,0002016Spring
5,0002008Fall
3,0001999Fall
Pelee Island Natural Areas (ON013)
Number Year Season
3,000 - 4,0002014Spring
Eastern Lake St. Clair (ON012)
Number Year Season
3,7292003Winter
3,3561996Winter
3,8491994Winter
White Islets and Wilson Creek (BC025)
Number Year Season
3,5002018Fall
Grande Prairie - Trumpeter Swan IBA (AB107)
Number Year Season
3,3702008Spring
Machias Seal Island (NB019)
Number Year Season
3,0002007Winter
Netley-Libau Marsh (MB009)
Number Year Season
3,0001990Fall