IBA Gull and Sandhill Island
Near Matheson Island, Manitoba
Site Summary
MB004 Latitude
Longitude
52.129° N
97.348° W
Elevation
Size
217 - 220 m
5.67 km²
Habitats:
deciduous woods (temperate), scrub/shrub, freshwater lake
Land Use:
Fisheries/aquaculture
Potential or ongoing Threats:
Disturbance, Hunting
IBA Criteria: Globally Significant: Congregatory Species, Continentally Significant: Colonial Waterbird/Seabird Concentrations
Conservation status:
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Site Description
Gull and Sandhill Island are located southwest of Commissioner Island and east of McBeth Point, near the southern end of Lake Winnipeg's northern basin. These islands are sandy and have low elevations; Gull Island rises no more than 3 m above the high water line, and Sandhill Island rises even less. Both islands are vegetated with patches of trees, shrubs, and broad expanses of grasses and other herbaceous plants.
Birds
In 1998, a total of 3,150 American White Pelican nests were recorded on Gull Island during the late summer. This represents about 3.7% of the world's estimated population, and comprised the largest American White Pelican colony on Lake Winnipeg for that year. A survey in 1997 yielded an estimate of 2,500+ pairs, but this estimate was undoubtedly low since the colony was only visited from a distance by boat to avoid disturbing the birds.

Sandhill Island, which is located to the south, supports large numbers of Common Terns. In 1997, the total number of nesting birds was estimated to be 4,400+ pairs. This total may represent as much as 11% of the estimated North American Common Tern population, and is the largest known colony west of New Brunswick.




IBA Criteria
SpeciesT | A | I Links Date Season Number G C N
American White Pelican 1998 SU 6,300
Common Tern 1997 SU 8,800
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
These islands, which are currently owned by the provincial government, are in the process of receiving special status and should soon be declared as provincial Ecological Reserves. Designation as an Ecological Reserve would provide these islands with the greatest possible land-use protection in Manitoba. Access to Ecological Reserves is not permitted without written permission from the Manitoba government.

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