| Negritos Islands Biological Reserve | |
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| Islas Negritos Biological Reserve | |
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IUCN Category Ia (Strict Nature Reserve)
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| Location | Guanacaste Province, Costa Rica |
| Coordinates | [1] |
| Area | 350 acres (1.4 km2) |
| Established | 1982 |
| Governing body | National System of Conservation Areas (SINAC) |
The Negritos Islands Biological Reserve is a nature reserve of Costa Rica, part of the Tempisque Conservation Area, containing two islands separated by a small channel in the Gulf of Nicoya which protects migratory bird species which use the island seasonally.