
| 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 | ||||||||||||||||||||||||||
| Brimstone | . | 2 | . | 8 | 32 | 20 | 16 | 14 | 10 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . |
| Large White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . |
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . |
| Green-veined White | . | . | . | . | . | . | . | 2 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . |
| Green Hairstreak | . | . | . | . | . | . | . | 4 | 4 | . | 12 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . |
| Small Copper | . | . | . | . | 4 | 6 | 4 | . | 2 | 6 | . | 6 | . | . | . | . | 6 | 4 | 6 | 4 | 14 | 4 | 6 | 4 | . | 6 |
| Holly Blue | . | . | . | 2 | . | . | . | 2 | 6 | . | . | . | . | . | . | . | . | 8 | 10 | 6 | 4 | 4 | . | 2 | . | . |
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . |
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | 4 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . |
| Peacock | 2 | 10 | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . |
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | 14 | 40 | 44 | 10 | . | . | . | . | . | . | . | 8 | 2 | . | . | . | . | . | . | . |
| Pearl-bordered Fritillary | . | . | . | 4 | 4 | 8 | 2 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . |
| High Brown Fritillary | . | . | . | . | . | . | . | . | . | 4 | 30 | 22 | 10 | 10 | 10 | 2 | . | . | . | . | . | . | . | . | . | . |
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | 22 | 40 | 28 | 16 | 6 | 8 | . | . | . | . | . | . | . | . | . | . | . |
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 6 | 6 | . | 2 | . | . | 6 | 4 | . | . | . | . |
| Speckled Wood | . | . | 2 | 2 | . | 2 | 2 | 2 | . | . | . | 2 | . | . | . | . | . | . | . | . | 6 | 2 | 8 | 4 | . | 6 |
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | . | . | . | . | . | . |
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . |
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 2 | 10 | 40 | 98 | 170 | 164 | 270 | 250 | 168 | 110 | 16 | 4 | 6 | . | . |
| Meadow Brown | . | . | . | . | . | . | . | . | 6 | 24 | 42 | 32 | 38 | 32 | 34 | 82 | 44 | 34 | 2 | 6 | 2 | . | . | . | . | . |
| Small Heath | . | . | . | . | 4 | 4 | 2 | 8 | 6 | 6 | . | 2 | . | . | . | . | . | . | 6 | 2 | 12 | 2 | . | . | . | . |
| Ringlet | . | . | . | . | . | . | . | . | . | . | . | 8 | 36 | 8 | 58 | 16 | 2 | . | 2 | . | . | . | . | . | . | . |