COSEWIC rapid review of classification on the roseate tern, Sterna dougallii in Canada. : CW69-18/24-2023E-PDF
"This globally-distributed colonial seabird breeds on small coastal islands from eastern Nova Scotia to Long Island, New York, and winters from Colombia to eastern Brazil. Regular breeding in Canada is now confined to 2-8 colonies in Nova Scotia, although individuals of this species, and its hybrids with other tern species, are occasionally present in other tern colonies. The Canadian breeding population is about 106-146 mature individuals. Both the number of adult birds breeding in Canada and the range in Canada have declined by about 64% over the past 3 generations (1995-2019). The main factors limiting population recovery are predation, low post-fledging survival rates, habitat degradation, and impacts of stochastic weather events such as hurricanes"--Reason for designation, page iii.
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| Titre | COSEWIC rapid review of classification on the roseate tern, Sterna dougallii in Canada. |
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| Type de publication | Monographie |
| Langue | [Anglais] |
| Autres langues publiées | [Français] |
| Format | Texte numérique |
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| Description | 1 online resource (xvi pages) : maps |
| ISBN | 9780660497211 |
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