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| Participant: | School N 11, Rajakoski |
| Site: | Rajakoski (Russia) |
| Date: | 20.05.2019 |
Phenological stages
| Common name | Scientific name | Date of observation | Phenological stage | |
|---|---|---|---|---|
| Arctic Tern | Sterna paradisaea | 2019-05-19 | First observation | |
Ice and snow
| First observation of | Date |
|---|---|
| Waters free of ice | 19.05.2019 |