
| 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 | 11 | . | . | . | . | . | . | . | . | . | 3 | . | . | 4 | 2 | . | . | 1 | . | . | . | ||||||
| Brimstone | 76 | 1 | . | 6 | 8 | 6 | 6 | 5 | 6 | 6 | . | 1 | . | 1 | . | 4 | 3 | 3 | . | 1 | 1 | ||||||
| Large White | 4 | . | . | . | . | . | . | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Small White | 6 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green-veined White | 39 | . | . | 1 | 4 | 5 | 6 | 9 | . | . | . | . | 1 | . | 1 | 4 | . | 2 | . | . | . | ||||||
| Orange Tip | 18 | . | . | 1 | 4 | 6 | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 5 | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Holly Blue | 14 | 1 | . | 1 | 3 | 3 | 2 | . | . | . | . | . | . | . | . | 2 | 1 | . | 1 | . | . | ||||||
| White Admiral | 8 | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | ||||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | . | . | 1 | . | . | ||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Peacock | 41 | 4 | . | 6 | 4 | 5 | 3 | 1 | . | . | . | . | . | 1 | . | 1 | 9 | 2 | 2 | . | . | ||||||
| Comma | 4 | . | . | . | 2 | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 3 | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 34 | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 3 | 10 | 7 | 1 | 2 | . | . | ||||||
| Speckled Wood | 43 | 1 | . | . | 1 | 1 | 1 | . | 1 | 2 | 1 | 1 | . | 1 | . | 4 | 2 | 3 | 7 | 4 | 3 | ||||||
| Grayling | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 64 | . | . | . | . | . | . | . | . | . | . | . | 1 | 8 | 6 | 10 | 9 | 13 | 8 | 1 | . | ||||||
| Meadow Brown | 25 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | 9 | . | 2 | 1 | 1 | . | ||||||
| Small Heath | 2 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Ringlet | 9 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | 1 | . | . | . | . | . | . | ||||||