| Commune | Code | Observation(s) | % des observations totales |
|---|---|---|---|
| ARTINS | 41004 | 6 | 16.7 |
| CHOUE | 41053 | 1 | 2.8 |
| COUËTRON-AU-PERCHE | 41248 | 7 | 19.4 |
| ÉPIAIS | 41077 | 1 | 2.8 |
| FRÉTEVAL | 41095 | 1 | 2.8 |
| LA VILLE-AUX-CLERCS | 41275 | 10 | 27.8 |
| LE PLESSIS-DORIN | 41177 | 1 | 2.8 |
| LUNAY | 41120 | 2 | 5.6 |
| NAVEIL | 41158 | 1 | 2.8 |
| PEZOU | 41175 | 2 | 5.6 |
| PIERREFITTE-SUR-SAULDRE | 41176 | 1 | 2.8 |
| SAINT-FIRMIN-DES-PRÉS | 41209 | 1 | 2.8 |
| SAINT-HILAIRE-LA-GRAVELLE | 41214 | 1 | 2.8 |
| SARGÉ-SUR-BRAYE | 41235 | 1 | 2.8 |
| SOUGÉ | 41250 | 1 | 2.8 |
| VALLÉE-DE-RONSARD | 41070 | 8 | 22.2 |
| VALLOIRE-SUR-CISSE | 41055 | 1 | 2.8 |
| VILLIERS-SUR-LOIR | 41294 | 3 | 8.3 |
| VINEUIL | 41295 | 1 | 2.8 |