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Ivory Gull

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Ivory Gull

Scientific Name: Pagophila eburnea

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Avibase

Dendroica

Cornell Lab of Ornithology

Thresholds:

GlobalInformation200
Regional/ContinentalInformation40
Regional SARInformation30
Sub-regional/National SARInformation2

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.

Regional SAR

This threshold is static and standardized: Passeriformes (e.g. perching/songbirds) = 90 individuals (or 30 pairs); non-Passeriformes = 30 individuals (or 10 pairs). Only species listed by the IUCN as Vulnerable are presently eligible.

Sub-regional/National SAR

The sub-regional/national SAR threshold = 1% of the COSEWIC population estimate for the region (provinces/territories) in which the species is listed as being at risk. This threshold is used to identify trigger species and IBAs under criterion C1.

Inglefield Mountains (NU014)
Number Year Season
7301982Summer
Sydkap Ice Field (NU055)
Number Year Season
6001976Summer
Northwestern Brodeur Peninsula (NU065)
Number Year Season
5601982Summer
Seymour Island (NU045)
Number Year Season
3001976Summer
Eastern Devon Island Nunataks (NU057)
Number Year Season
911982Summer
Southwest Bylot (NU013)
Number Year Season
192013Fall
751994Summer
Quidi Vidi Lake (NF022)
Number Year Season
2 - 52002Winter
4 - 91998Winter
Cape Graham Moore (NU068)
Number Year Season
42015Summer
2 - 62014Fall
32013Fall
Cape Hay (NU004)
Number Year Season
32013Fall
Cape Freels Coastline and Cabot Island (NF025)
Number Year Season
22013Spring