IBA Grey and Green islets
Prince Rupert, British Columbia
Site Summary
BC125 Latitude
54.584° N
130.719° W
0 - 19 m
81.26 km²
open sea, coastal cliffs/rocky shores (marine)
Land Use:
Potential or ongoing Threats:
Disturbance, Oil slicks
IBA Criteria: Nationally Significant: Congregatory Species
Conservation status:
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Site Description
Grey and Green are small rocky islands lying just over 3 kilometres off the eastern coast of Dundas Island, in northern Chatham Sound, near the City of Prince Rupert. Grass covers the higher portions of the main islands, but the tidally-connected rocks off the northwest corner of Green Island are devoid of vegetation.
Surveys of Grey Islet and Green Island were conducted in 1988 when 356 breeding pairs of Glaucous-winged Gulls (1.4% of the national population) were recorded. Grey and Green support the largest colonies of breeding Glaucous-winged Gulls in the Chatham Sound area. Although occasionally nesting singly, the Glaucous-winged Gull is primarily a colonial nester. In British Columbia, all the large colonies are on islands less than 100 m in height and 25 ha in size.

Other birds that nest on the islands, although not in nationally significant numbers, include Black Oystercatchers and Pigeon Guillemots. Moulting Harlequin Ducks are commonly seen around the islets. Additionally, the waters surrounding the islands are important feeding areas for many marine birds.

IBA Criteria
SpeciesT | A | I Links Date Season Number G C N
Note: species shown in bold indicate that the maximum number exceeds at least one of the IBA thresholds (sub-regional, regional or global). The site may still not qualify for that level of IBA if the maximum number reflects an exceptional or historical occurrence.
Conservation Issues
Prince Rupert is a major coastal port town and so oil spills and disturbance from boaters are ever-present threats. The islands are crown lands, owned by the BC government, and there is a Canadian Coastguard lighthouse reserve on Green Island.

The IBA Program is an international conservation initiative coordinated by BirdLife International. The Canadian co-partners for the IBA Program are Birds Canada and Nature Canada.
   © Birds Canada