
| 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 | ||||||||||||||||||||||||||
| Small Skipper | NI | . | . | . | . | . | . | . | . | . | 1 | 30 | 15 | 9 | 11 | 6 | 3 | . | . | . | . | ||||||
| Large Skipper | 97 | . | . | . | . | . | . | . | 6 | 19 | 26 | 20 | 6 | 2 | 1 | 1 | . | 2 | . | . | . | ||||||
| Grizzled Skipper | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 16 | . | 2 | 5 | . | 3 | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | 39 | . | . | . | . | 1 | 3 | 2 | . | . | . | 1 | 3 | 2 | 3 | 7 | 1 | 7 | 1 | . | 1 | ||||||
| Small White | 16 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 3 | 6 | 1 | . | 1 | ||||||
| Green-veined White | 207 | . | 10 | 1 | 4 | 13 | 9 | 1 | . | . | . | 2 | 4 | 26 | 20 | 37 | 24 | 15 | 1 | . | . | ||||||
| Orange Tip | 6 | . | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 8 | . | . | 4 | 1 | 1 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 10 | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | 1 | 2 | . | . | . | 1 | . | 2 | ||||||
| Silver-studded Blue | 40 | . | . | . | . | . | . | 1 | . | . | 4 | 13 | 6 | 5 | 1 | . | . | . | . | . | . | ||||||
| Common Blue | 13 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | 3 | 3 | . | 1 | . | . | ||||||
| Holly Blue | 2 | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 12 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | 1 | 2 | . | 2 | . | ||||||
| Small Tortoiseshell | 19 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 4 | 3 | 3 | . | 2 | ||||||
| Peacock | 42 | 1 | 2 | . | . | . | . | . | . | . | . | . | 1 | 8 | 15 | 8 | . | . | . | . | . | ||||||
| Speckled Wood | 42 | . | 1 | 1 | . | . | 3 | 1 | . | . | . | 1 | 2 | 4 | 10 | 2 | 2 | 5 | 1 | 1 | 2 | ||||||
| Wall Brown | 8 | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | ||||||
| Marbled White | 109 | . | . | . | . | . | . | . | . | . | 1 | 16 | 22 | 24 | 10 | 11 | . | . | . | . | . | ||||||
| Grayling | 14 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 1 | 4 | 2 | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 332 | . | . | . | . | . | . | . | . | . | . | 5 | 36 | 69 | 69 | 67 | 17 | 5 | 1 | . | . | ||||||
| Meadow Brown | 553 | . | . | . | . | . | . | . | . | 16 | 41 | 89 | 67 | 73 | 60 | 70 | 14 | 3 | . | . | . | ||||||
| Small Heath | 42 | . | . | . | . | . | 1 | 7 | 2 | 3 | 7 | 4 | 1 | . | . | . | 2 | 8 | 2 | . | . | ||||||
| Ringlet | 6 | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | ||||||