
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 6 | 6 | . | . | . | . | . | . | . | . | . | . | . | |
| Brimstone | . | . | 6 | 2 | . | . | 2 | 2 | 4 | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | |
| Large White | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 2 | 6 | 4 | 4 | . | 4 | . | . | . | |
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | |
| Green-veined White | . | . | 8 | 20 | . | 12 | 8 | 8 | 2 | . | 2 | . | 4 | 10 | 4 | . | 20 | 18 | 8 | 6 | 20 | 10 | 32 | 20 | . | |
| Orange Tip | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Northern Brown Argus | . | . | . | . | . | . | . | . | . | . | 4 | 4 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |
| Holly Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | 4 | 8 | 4 | 8 | . | |
| Painted Lady | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | . | 12 | 24 | 22 | 40 | 44 | 2 | 8 | 2 | . | |
| Small Tortoiseshell | . | 2 | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | 2 | . | 2 | . | 2 | 2 | . | |
| Peacock | . | 10 | 6 | . | . | 4 | 2 | 4 | . | . | . | . | . | . | . | . | 6 | 36 | 30 | 10 | 10 | . | 4 | . | . | |
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | 4 | 2 | . | . | |
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | . | . | . | . | 8 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |
| Pearl-bordered Fritillary | . | . | . | . | . | . | . | 4 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 22 | 22 | 4 | 4 | 2 | . | . | . | . | . | . | . | . | |
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 4 | 2 | 10 | 12 | 16 | 10 | . | . | . | . | . | |
| Speckled Wood | . | . | . | 10 | . | 6 | 4 | . | 2 | 6 | 20 | 28 | 12 | 6 | 4 | 2 | 8 | 8 | . | 6 | 20 | 108 | 60 | 28 | 4 | |
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 4 | 40 | 34 | 82 | 56 | 32 | 44 | 50 | 24 | 8 | . | . | . | . | . | |