| IBA |
Nottawasaga Island
Collingwood, Ontario |
| Site Summary |
| ON153 |
Latitude
Longitude |
44.537° N
80.259° W |
Elevation
Size |
177 m
3.84 km² |
Habitats:
deciduous woods (temperate), freshwater lake
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Land Use:
Not Utilized (Natural Area)
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Potential or ongoing Threats:
Unknown
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| IBA Criteria: Nationally Significant: Congregatory Species |
| Conservation status: |
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Site Description
Nottawasaga Island is a small treed island, situated approximately 1.5 km offshore, in Nottawasaga Bay, Ontario. This large bay is at the southern end of Georgian Bay and is fed by the Nottawasaga, Bighead, Beaver and Pretty rivers in addition to the rest of the Lake Huron system.
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Birds
Several species of colonial waterbirds breed on Nottawasaga Island. Of particular note is the large number of Great Egrets that breed here. In 2000, 60 nests were counted containing 171 young. In 1991, there were only seven pairs of Great Egrets. This is one of only four large Great Egret colonies in Canada. Also in 1991, 107 pairs of Black- crowned Night- Herons (almost 3% of the national population) and 105 pairs of Great Blue Herons nested on the island. In 2000, Black-crowned Heron nests were only partially counted (46 nests). Other breeding birds on Nottawasaga Island are: Green Heron (at least one nest), Great Black-backed Gull (1 nest), Herring Gull (2380 nests in 1999) and Ring-billed Gull (1741 nests in 1999).
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IBA Criteria |
| Species↓ T | A | I |
Links |
Date |
Season |
Number |
G |
C |
N |
| American Herring Gull |
|
2011 |
SP |
5,650 |
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✔ |
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| American Herring Gull |
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1999 - 2018 |
SU |
4,000 - 5,900 |
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✔ |
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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.
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Conservation Issues
The conservation issues associated with this site are unknown.
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