
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | . | . | . | . | . | ||||||||
| Large Skipper | . | . | . | . | . | . | . | . | 3 | 4 | 6 | . | 1 | 1 | . | . | . | . | ||||||||
| Brimstone | 1 | . | . | 3 | 3 | 2 | . | . | . | . | 1 | 16 | 17 | 18 | 2 | 11 | 2 | . | ||||||||
| Large White | . | . | . | 10 | 8 | 15 | 2 | . | 1 | 3 | 20 | 15 | 17 | 10 | . | 1 | . | . | ||||||||
| Small White | . | . | . | . | . | 6 | . | . | . | 2 | 9 | . | 8 | . | 1 | 1 | . | . | ||||||||
| Green-veined White | . | 2 | 5 | 24 | 35 | 39 | 9 | 1 | 1 | 12 | 37 | 19 | 18 | 18 | 4 | 5 | 2 | . | ||||||||
| Orange Tip | . | . | . | 3 | 9 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 1 | . | ||||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | 3 | 2 | . | ||||||||
| Peacock | 10 | . | . | 1 | 1 | . | . | . | . | . | . | 25 | 62 | 99 | 95 | 11 | 4 | . | ||||||||
| Comma | 9 | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 1 | 1 | . | 1 | . | ||||||||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 5 | 2 | . | . | . | ||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 18 | 77 | 58 | 63 | 42 | 8 | 2 | . | . | ||||||||
| Meadow Brown | . | . | . | . | . | . | . | . | 2 | 32 | 79 | 85 | 89 | 42 | 7 | 4 | . | . | ||||||||
| Ringlet | . | . | . | . | . | . | . | . | 1 | 47 | 34 | 14 | 6 | 2 | 1 | . | . | . | ||||||||