
| 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 | . | . | . | . | . | . | . | . | . | 8 | . | . | . | . | . | . | . | . | . | |||||||
| Large Skipper | . | . | . | . | . | . | . | 2 | 4 | . | . | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | . | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 4 | 2 | 6 | . | . | 2 | . | 2 | . | 2 | 2 | 26 | 16 | 6 | 2 | . | . | . | . | |||||||
| Large White | . | . | . | . | . | . | . | . | . | . | . | . | 16 | 12 | 8 | 2 | . | . | . | |||||||
| Small White | 2 | 2 | 8 | 2 | . | . | . | . | . | 20 | 46 | 20 | 18 | 26 | 18 | 8 | 2 | 8 | . | |||||||
| Green-veined White | . | . | . | . | . | . | . | . | . | 16 | 4 | 8 | 34 | 2 | 16 | 6 | . | . | . | |||||||
| Orange Tip | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Blue | . | . | 4 | . | 6 | 6 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Common Blue | . | 6 | 62 | 112 | 28 | 36 | . | 2 | . | 4 | 6 | 18 | 64 | 48 | . | 6 | . | 4 | . | |||||||
| Holly Blue | . | . | 4 | 4 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 4 | . | |||||||
| Small Tortoiseshell | 4 | . | . | . | . | . | 4 | . | . | . | . | 4 | 22 | 8 | 16 | 2 | . | . | . | |||||||
| Peacock | 12 | . | . | . | . | . | . | . | . | . | 10 | 4 | 12 | . | . | . | 2 | . | . | |||||||
| Speckled Wood | 4 | . | 2 | 14 | . | . | . | . | . | . | . | . | 18 | 14 | 4 | 6 | . | . | . | |||||||
| Marbled White | . | . | . | . | . | . | 14 | 26 | 56 | 26 | 24 | 6 | . | . | . | . | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 50 | 36 | 42 | 32 | 16 | . | . | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | 2 | 4 | 4 | 32 | 48 | 12 | 4 | 18 | 4 | . | . | . | . | |||||||
| Small Heath | . | . | 2 | . | . | 10 | 4 | 8 | 10 | . | 2 | . | . | . | . | . | . | . | . | |||||||
| Ringlet | . | . | . | . | . | . | 8 | 42 | 80 | 60 | 10 | 12 | 34 | 2 | . | . | . | . | . | |||||||