
| 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 | 1 | 1 | 2 | 5 | 8 | 1 | 5 | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | . | 1 | 1 | 7 | 3 | 3 | 1 | 1 | 3 | . | . | . | . | ||||||
| Brimstone | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | ||||||
| Large White | . | . | . | . | 1 | . | 5 | . | . | . | . | . | 1 | 2 | 1 | 12 | 4 | . | . | . | ||||||
| Small White | 1 | 2 | 2 | 5 | 5 | 2 | 2 | 2 | 1 | . | . | 3 | 15 | 26 | 14 | 29 | 8 | 2 | 7 | . | ||||||
| Green-veined White | . | . | . | . | . | 3 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Orange Tip | . | . | . | 1 | 1 | 5 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | . | . | . | 1 | 1 | ||||||
| Peacock | 3 | 4 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 3 | 1 | 3 | . | ||||||
| Speckled Wood | . | . | 2 | 2 | 3 | 2 | 7 | . | . | . | 3 | . | 1 | 2 | 3 | 2 | 3 | 5 | . | 1 | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 2 | 40 | 49 | 20 | 31 | 4 | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | 2 | 12 | 30 | 41 | 44 | 23 | 23 | 10 | 11 | . | . | . | . | ||||||
| Small Heath | . | . | . | . | 7 | 19 | 62 | 25 | 38 | 16 | 4 | 7 | 7 | 9 | . | 1 | 1 | . | 2 | 1 | ||||||
| Ringlet | . | . | . | . | . | . | . | . | . | . | 5 | 15 | 16 | 4 | . | . | . | . | . | . | ||||||