
| 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 | 16 | . | . | . | . | . | . | . | . | 2 | 5 | 5 | 2 | 1 | . | 1 | . | . | . | . | . | . | . | ||||
| Large White | 9 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | 1 | 1 | 1 | 2 | . | . | . | ||||
| Small White | 34 | . | . | . | 1 | . | . | . | . | 1 | 1 | 2 | . | . | . | 3 | 2 | 2 | 2 | 13 | . | . | . | ||||
| Green-veined White | 6 | . | . | . | . | . | . | . | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 12 | . | . | . | . | . | 1 | 1 | 2 | 1 | . | 1 | . | . | . | . | . | 1 | 1 | 1 | 2 | . | . | ||||
| Silver-studded Blue | 593 | . | . | . | . | . | . | . | . | . | . | 2 | 40 | 95 | 92 | 159 | 81 | 47 | 47 | 20 | . | . | . | ||||
| Common Blue | 128 | . | . | . | . | . | 1 | 1 | 1 | 6 | 12 | 10 | 10 | 7 | . | . | 3 | 30 | 30 | 4 | 3 | 4 | 1 | ||||
| Red Admiral | 27 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 2 | 1 | 1 | 4 | 1 | 1 | 8 | ||||
| Painted Lady | 19 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 2 | 9 | ||||
| Small Tortoiseshell | 160 | 4 | 10 | 9 | 1 | 1 | . | . | . | . | 2 | 5 | 2 | . | . | 1 | 2 | 1 | 1 | 4 | 21 | 33 | 32 | ||||
| Peacock | 26 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 3 | 8 | 2 | 2 | . | ||||
| Small Pearl-bordered Fritillary | 28 | . | . | . | . | . | . | . | . | 12 | 10 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | ||||
| Marsh Fritillary | 4 | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Wall Brown | 20 | . | . | . | . | . | 3 | 4 | 6 | 5 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||
| Grayling | 161 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 12 | 41 | 26 | 26 | 31 | 3 | 4 | . | ||||
| Gatekeeper / Hedge Brown | 300 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 60 | 79 | 79 | 37 | 12 | 2 | . | ||||
| Meadow Brown | 374 | . | . | . | . | . | . | . | . | . | . | 3 | 10 | 27 | 36 | 120 | 62 | 47 | 47 | 8 | 6 | 1 | . | ||||
| Small Heath | 67 | . | . | . | . | . | 2 | 2 | 1 | 16 | 19 | 15 | 6 | 5 | . | 1 | . | . | . | . | . | . | . | ||||