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Location Canada, Québec
Central coordinates 64o 9.80' West  48o 29.69' North
IBA criteria A4i, A4ii, A4iii
Area 2,000 ha
Altitude 0 - 135m
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada

Site description Bonaventure Island is located on the Gulf of St Lawrence approximately 3.5 km from the shore of the Gaspé Peninsula. The 416 ha island is roughly circular in shape with cliffs on the southeastern and northeastern shores rising to a height of approximately 75 m. The island lies within the Atlantic Highlands biome with balsam fir and spruce being dominant species. The cliffs and shorelines are generally devoid of vegetation with the exception of some arctic / alpine species that are able to withstand the harsh microclimate. Thus far, 572 vascular plant species have been recorded on the island, including eight that are rare in the province of Quebec and five that are provincially vulnerable or threatened.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Gannet Morus bassanus breeding  1999  37,000 breeding pairs  A4ii  Least Concern 
Larus argentatus unknown  1978  10,000 individuals  A4i  Not Recognised 
A4iii Species group - seabirds breeding  50,000-99,999 breeding pairs  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Île Bonaventure Faunal Habitat 78 protected area contained by site 79  
Île Bonaventure et du Rocher Percé Migratory Bird Sanctuary 1,360 protected area overlaps with site 980  
Île Bonaventure et du Rocher Percé Provincial Park 580 protected area overlaps with site 980  


IUCN habitat Habitat detail Extent (% of site)
Forest Temperate coniferous forest  -
Coastline Sea cliffs and rocky shores  -

Land use

Land-use Extent (% of site)
nature conservation and research major
tourism/recreation major

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Bonaventure Island. Downloaded from on 02/10/2014

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