| ZICO |
Country Island Complex
Country Harbour/Tor Bay, Nouvelle-Écosse |
| Résumé de Site |
| NS028 |
Latitude
Longitude |
45,158° N
61,452° O |
Altitude
Superficie |
0 - 10 m
16,35 km² |
Habitats:
prairie naturelle, haute mer, anse ou autre élément du rivage (marin)
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Usages:
Pêcheries ou aquaculture, Terrain urbain, industriel ou servant au transport
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Menaces potencielles ou existantes:
dérangement des oiseaux, interactions avec les espèces indigènes ou maladie, développement urbain ou industriel
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| Catégorie: significative au niveau mondial: espèce(s) grégaire(s), concentrations d'oiseaux aquatiques ou marins coloniaux, significative au niveau national: espèce(s) menacée(s) |
| Status de protection: |
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Description du site
Roseate Terns (identified as nationally Threatened by COSEWIC) have been recorded nesting on Country Island since the late 1980s. In 1987, 1995, and 1996 an average of 30 - 35 pairs of Roseate Terns were recorded. In 1996, 45 pairs (about 37.5% of the estimated national population) were estimated among approximately 330 Arctic Terns and 130 Common Terns. During that year, however, exceptionally high predation by gulls, crows and ravens resulted in almost complete breeding failure. In 1997, only one pair of Roseate Terns attempted to nest on the island and the number of Common and Arctic Terns decreased by half. In 1998 only three pairs of Roseate Terns nested on the island, although one pair abandoned their nest early in incubation. The number of Arctic and Common Terns nesting in 1998 increased to near 1996 levels. In 1997, surveys of adjacent islands (within 100 km) located a total of 17 pairs of Roseate Terns at three sites: an unamed island off Charlos Cove, a peninsula at Fisherman's Harbour and Inner West Bird Island. In 1998, Roseate terns were located at the Fisherman's Harbour colony and on Dorts Island in Tor Bay, but were absent from Charlos Cove, and Inner West Bird Island. During surveys completed in 1987, Roseate Terns were suspected of nesting at one of the Bird Islands, and at two sites in Tor Bay (Cooks Island and Hog Island). This suggests that the “Country Island Complex” has been in existence for some time. In addition to the nesting terns, over 50,000 pairs of Leach's Storm-Petrels were estimated on Country Island in 1998. This represents about 2% of the estimated western Atlantic population. Until 1997, about 90 pairs of Herring Gulls and 20 pairs of Great Black-backed Gulls also nested on the island; nesting by these gull species is now actively discouraged as part of a Tern Restoration Plan (see below).
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IBA Criteria |
| Espèce↓ T | A | I |
Liens |
Date |
Saison |
Nombre |
G |
C |
N |
| Bruant des prés |
|
2018 |
SP |
25 |
|
|
✔ |
| Bruant des prés |
|
2018 |
SU |
25 |
|
|
✔ |
| Puffin des Anglais |
|
2019 |
SU |
6 |
|
✔ |
|
| Sterne de Dougall |
|
1993 - 2018 |
SU |
2 - 108 |
|
|
✔ |
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Note: les espèces en gras dans ce tableau indiquent que le nombre maximum d'oiseaux à ce site excède au moins l'un des seuils de population (national, continental ou global). Il se peut que le site ne se qualifie pas à ce niveau de ZICO se nombre maximum correspondait à une observation exceptionnelle ou à une donnée historique.
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