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Greater Scaup

Scientific Name: Aythya marila

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Avibase

Dendroica

Cornell Lab of Ornithology

Thresholds:

GlobalInformation13,000
Regional/ContinentalInformation5,600

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.

West End of Lake Ontario (ON022)
Number Year Season
6,038 - 7,1272017Winter
5,000 - 5,2002015Winter
7,0002014Winter
5,9882013Winter
14,4442012Winter
14,6302011Winter
6,5002010Winter
12,4602007Winter
4,7002006Winter
7,1942005Winter
5,0002004Fall
20,0002002Fall
4,500 - 25,0002001Fall
10,0002001Winter
6,000 - 10,0002000Fall
5,000 - 7,0002000Winter
4,7701999Fall
15,0001999Winter
8,0001998Fall
7,500 - 30,0001997Winter
5,000 - 10,0001996Fall
5,000 - 10,0001996Winter
10,0001995Fall
10,0001995Spring
5,000 - 10,0001995Winter
8,0001994Fall
5,000 - 10,8001994Winter
5,3131993Fall
6,7501993Spring
5,0001993Winter
100,0001992Winter
Canal de Beauharnois (QC161)
Number Year Season
50,0001974Fall
??Other
Point Pelee (ON006)
Number Year Season
4,5002016Spring
5,000 - 7,4002015Winter
50,0002015Spring
16,850 - 29,0002014Winter
7,000 - 15,0002014Fall
5,000 - 50,0002013Winter
10,000 - 50,0002012Winter
10,0002012Fall
15,0002010Winter
8,000 - 10,0002010Spring
5,0002009Spring
Prince Edward County South Shore (ON003)
Number Year Season
9,000 - 29,1002012Winter
5,0002009Fall
10,000 - 16,6002008Fall
5,0002006Fall
5,000 - 8,5002005Fall
5,000 - 10,0002002Fall
39,0001994Fall
Niagara River Corridor (ON002)
Number Year Season
5,000 - 5,2342015Winter
6,0002014Spring
1,800 - 7,1412011Winter
4,7782010Winter
8,8352009Winter
13,900 - 18,6202008Winter
2,0002004Winter
4,0002003Fall
5,7732002Winter
10,5002000Winter
7,6001999Fall
30,0001999Winter
10,0001997Winter
7,8001996Winter
2,1351995Fall
5,8871993Winter
10,0311990Fall
2,1461985Fall
15,0001979Fall
2,2561975Fall
Long Point Peninsula and Marshes (ON001)
Number Year Season
5,0002016Winter
5,000 - 20,0002016Fall
5,0002015Spring
5,200 - 13,0532014Winter
10,000 - 19,0002014Fall
6,0002013Fall
10,000 - 18,0002012Winter
8,200 - 25,0002012Fall
5,0002012Spring
5,722 - 6,0002011Winter
5,0152006Winter
9,1162004Winter
5,000 - 25,1002000Fall
15,1851999Winter
8,0001999Fall
8,000 - 13,9511998Winter
23,6861998Spring
7,9821997Winter
8,7821991Winter
Old Crow Flats (YK001)
Number Year Season
25,0001995Summer
Hamilton Harbour Waterbird Colonies (ON020)
Number Year Season
4,7922010Winter
4,8142009Fall
5,7252008Winter
6,7502005Winter
14,6272002Winter
5,0002001Spring
20,0002000Winter
5,0001993Spring
Wolfe Island (ON037)
Number Year Season
4,2482017Spring
4,7292015Fall
6,9762011Winter
5,000 - 10,0002010Fall
4,800 - 20,0002009Fall
4,2272002Winter
6,9341998Winter
15,0001996Spring
8,0001990Fall
Greater Rondeau Area (ON007)
Number Year Season
5,000 - 18,0002017Winter
7,500 - 7,5402016Winter
15,0002016Fall
12,5001995Spring
Dundas Valley and Dundas Marsh (ON005)
Number Year Season
4,874 - 4,8752010Winter
14,580 - 14,5842009Winter
7,1942005Winter
10,8612004Winter
11,4012003Winter
13,1312002Winter
7,1472001Winter
5,8862000Winter
17,5561999Winter
6,256 - 10,0001998Winter
9,3701997Winter
10,6001995Winter
5,0001993Winter
Napanee Limestone Plain (ON152)
Number Year Season
7,676 - 15,2122004Spring
Pelee Island Natural Areas (ON013)
Number Year Season
15,0002013Winter
Presqu'ile Provincial Park (ON004)
Number Year Season
8,0002016Spring
5,0002011Fall
5,000 - 5,5002010Fall
5,3492009Spring
5,0002008Spring
5,450 - 13,1502004Spring
5,857 - 12,8902004Winter
5,000 - 9,5732003Spring
10,0002002Winter
6,0002001Spring
4,4002001Winter
5,6502000Spring
5,000 - 7,6002000Winter
6,0001999Fall
5,0001999Spring
5,000 - 10,5001995Spring
5,2001995Winter
7,8001994Spring
11,0001981Winter
Eastern Lake St. Clair (ON012)
Number Year Season
4,8162009Winter
9,5202003Winter
Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017)
Number Year Season
5,1032007Winter
6,9002000Spring
6,1661993Winter
6,000 - 8,1651991Winter
Little Qualicum Estuary to Nanoose Bay (BC056)
Number Year Season
6,500 - 7,0002017Spring
Barrage de Beauharnois (QC131)
Number Year Season
5,0001990Winter
Baynes Sound (BC057)
Number Year Season
5,0002010Spring
K'omoks (BC272)
Number Year Season
5,0002010Spring