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;[[:Category:Sterna|Sterna]] trudeaui | ;[[:Category:Sterna|Sterna]] trudeaui | ||
==Identification== | ==Identification== | ||
| − | Distinctive medium sized white bodied tern with gray mantle. Crown white in all plumages. Ear patches black in breeding season, gray in non-breeding. Bill mostly yellow in breeding plumage but dark with a yellow | + | Distinctive medium sized white bodied tern with gray mantle. Crown white in all plumages. Ear patches black in breeding season, gray in non-breeding. Bill mostly yellow in breeding plumage but dark with a yellow tip in non-breeding. |
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==Distribution== | ==Distribution== | ||
| − | [[South America]]: found in lagoons and marshes of south-eastern [[Brazil]] and [[Uruguay]] to Patagonia. | + | [[South America]]: found in lagoons and marshes of south-eastern [[Brazil]] and [[Uruguay]] to Patagonia. Type specimen alleged to have been collected at Cape May, New Jersey. Probably incorrect. |
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==Taxonomy== | ==Taxonomy== | ||
This is a [[Dictionary_M-O#M|monotypic]] species<sup>[[#References|[1]]]</sup>. | This is a [[Dictionary_M-O#M|monotypic]] species<sup>[[#References|[1]]]</sup>. | ||
Latest revision as of 04:43, 25 May 2023
Alternative name: Trudeau's Tern
- Sterna trudeaui
Identification
Distinctive medium sized white bodied tern with gray mantle. Crown white in all plumages. Ear patches black in breeding season, gray in non-breeding. Bill mostly yellow in breeding plumage but dark with a yellow tip in non-breeding.
Distribution
South America: found in lagoons and marshes of south-eastern Brazil and Uruguay to Patagonia. Type specimen alleged to have been collected at Cape May, New Jersey. Probably incorrect.
Taxonomy
This is a monotypic species[1].
Habitat
Swamps, shallow seas, and intertidal marshes.
Behaviour
Plunge dives for fish. Breeding poorly known. Colonial, often in colonies of Brown-hooded Gulls. Builds an anchored floating nest.
References
- Clements, JF. 2011. The Clements Checklist of Birds of the World. 6th ed., with updates to August 2011. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
- Gochfeld, M., J. Burger, and E. F. J. Garcia (2020). Snowy-crowned Tern (Sterna trudeaui), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.truter.01
Recommended Citation
- BirdForum Opus contributors. (2025) Snowy-crowned Tern. In: BirdForum, the forum for wild birds and birding. Retrieved 13 May 2025 from https://www.birdforum.net/opus/Snowy-crowned_Tern
External Links
GSearch checked for 2020 platform.1
