
| APR | MAY | JUN | JUL | AUG | SEP | ||||||||||||||||||||||
| Week no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | |
| Site | Ind | ||||||||||||||||||||||||||
| Large Skipper | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Large White | 17 | . | . | 1 | . | 2 | . | . | 3 | 2 | 1 | . | . | 2 | . | . | 4 | . | . | . | . | . | |||||
| Small White | 93 | . | 1 | 1 | 3 | 4 | . | . | 10 | 1 | 3 | 1 | 1 | 1 | 3 | 11 | 18 | 16 | 10 | 1 | . | 1 | |||||
| Green-veined White | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 6 | . | . | . | . | |||||
| Orange Tip | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 17 | . | . | . | . | . | . | . | 7 | 3 | 1 | . | . | . | . | . | . | . | 3 | 2 | . | 1 | |||||
| Silver-studded Blue | 14 | . | . | . | . | . | . | . | . | 3 | . | 5 | 1 | . | 2 | . | . | . | . | . | . | . | |||||
| Common Blue | 120 | . | . | . | . | 2 | . | 1 | 12 | 7 | 9 | . | . | . | . | . | 7 | 20 | 50 | 10 | 1 | . | |||||
| Small Tortoiseshell | 13 | 1 | . | . | . | . | . | . | 2 | 1 | . | . | 3 | 1 | . | . | . | . | 1 | 1 | . | . | |||||
| Peacock | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Small Pearl-bordered Fritillary | 8 | . | . | . | . | . | . | 3 | . | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | . | . | |||||
| Wall Brown | 153 | . | . | 10 | 7 | 13 | 5 | 2 | . | . | . | . | . | . | . | 1 | 27 | 20 | 38 | 14 | 1 | . | |||||
| Grayling | 434 | . | . | . | . | . | . | . | . | . | . | . | 26 | 70 | 90 | 45 | 65 | 79 | 42 | 4 | . | . | |||||
| Gatekeeper / Hedge Brown | 16 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 6 | 3 | 2 | . | . | . | |||||
| Meadow Brown | 230 | . | . | . | . | . | . | . | . | . | 2 | 20 | 58 | 33 | 29 | 16 | 22 | 10 | 1 | . | . | . | |||||
| Small Heath | 27 | . | . | . | . | 3 | . | 5 | 10 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | |||||