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Mexican Species
| Gull-billed Tern (Gelochelidon nilotica) | |||
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| Subspecies | Hide subspecies | ||
| nilotica | Palearctic; winters tropical Africa and Persian Gulf to India | ||
| affinis | Transbaikalia to Manchuria and e China; winters SE Asia | ||
| aranea | E US to Gr. Antilles and Yucatán; winters to Brazil and Peru | ||
| vanrossemi | California to n Baja and nw Mexico; winters to Ecuador | ||
| gronvoldi | Coasts and rivers of French Guiana to ne Argentina | ||
| Endemic status | Not endemic | ||
| Birds (media) | Yes | ||
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