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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
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
6,000 - 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
50,0001979Fall
Quoddy Region (NB037)
Number Year Season
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
8,000 - 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
4,5002016Fall
4,0002016Spring
3,000 - 6,0002015Fall
15,0002014Fall
3,0002012Spring
5,0002011Spring
3,0002007Fall
Point Pelee (ON006)
Number Year Season
9,0002015Fall
6,000 - 7,5002014Fall
15,0001992Fall
Active Pass (BC015)
Number Year Season
3,500 - 5,1142017Spring
6,0002013Spring
3,000 - 5,0002012Spring
3,300 - 8,0002010Spring
4,0002009Spring
4,0002008Fall
7,0002004Fall
3,1502003Spring
7,0001998Spring
5,0001997Spring
10,0001995Fall
4,0001995Spring
7,0001992Spring
7,5001987Spring
7,0001976Fall
Prince Edward County South Shore (ON003)
Number Year Season
3,150 - 10,0002015Spring
3,0002014Spring
5,0002011Spring
3,000 - 5,0002009Spring
3,0002006Spring
3,000 - 5,0002005Spring
3,500 - 4,1802004Spring
3,0002002Spring
5,000 - 10,0001996Spring
Amherst Island (ON062)
Number Year Season
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
Little Qualicum Estuary to Nanoose Bay (BC056)
Number Year Season
4,500 - 7,2502006Winter
3,0001985Winter
??Other
Tadoussac (QC085)
Number Year Season
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
Baie des Escoumins et Grandes-Bergeronnes (QC084)
Number Year Season
3,0002016Fall
3,0002015Fall
3,000 - 6,0002014Fall
6,0002013Fall
2,0001994Fall
Grand Manan Archipelago (NB011)
Number Year Season
6,0001998Winter
Presqu'ile Provincial Park (ON004)
Number Year Season
3,0002016Spring
5,0002008Fall
3,0001999Fall
Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017)
Number Year Season
4,0002013Spring
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
Grande Prairie - Trumpeter Swan IBA (AB107)
Number Year Season
3,3702008Spring
Machias Seal Island (NB019)
Number Year Season
3,0002007Winter