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| Grey-backed Tern/Spectacled Tern Onychoprion lunatus
- Egg |
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| Photographer : | © Angela K Kepler |
| Location : | Laysan Island, NW Hawaiian Islands Wildlife Refuge, USA |
| Date : |
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| English synonyms: | Gray-backed Tern, Gray-bodied Tern, Grey-bodied Tern |
| Bird Family : | Sterninae - Terns & Noddies |
| Bird Group : | CICONIIFORMES |
| Red Data Status : | Least Concern |
| Remarks : | |
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