
| 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 | . | . | . | . | . | 9 | 8 | 18 | 8 | 14 | 4 | 4 | 3 | . | . | . | . | |||||||||
| Essex Skipper | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Large Skipper | . | . | . | 2 | 11 | 6 | 5 | 4 | 4 | 5 | 1 | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | 6 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 1 | 2 | 1 | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | |||||||||
| Large White | . | . | 1 | 1 | . | . | . | . | . | 2 | . | . | . | 2 | . | . | . | |||||||||
| Small White | 11 | 4 | 5 | . | 1 | 1 | . | 3 | 2 | 3 | 2 | 1 | 2 | . | . | . | 1 | |||||||||
| Green-veined White | . | 1 | . | . | . | . | . | 4 | 4 | 1 | 2 | 1 | . | . | . | . | . | |||||||||
| Orange Tip | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | |||||||||
| Common Blue | . | . | . | 6 | 1 | . | . | . | . | . | 1 | 6 | 8 | 5 | 1 | . | . | |||||||||
| Red Admiral | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | 1 | . | . | |||||||||
| Small Tortoiseshell | . | . | . | . | 1 | 1 | . | 2 | 1 | 1 | . | . | 2 | 6 | 5 | 12 | 1 | |||||||||
| Peacock | 1 | . | 1 | . | . | . | . | 5 | 5 | 6 | 9 | 2 | 1 | 1 | . | . | . | |||||||||
| Comma | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | . | . | . | . | 3 | 25 | 13 | 15 | 12 | 7 | 1 | . | . | . | . | . | . | |||||||||
| Speckled Wood | . | . | . | 2 | 4 | . | . | 1 | 1 | . | 1 | 1 | 1 | 2 | 1 | 3 | . | |||||||||
| Marbled White | . | . | . | . | 1 | 105 | 26 | 36 | 11 | 5 | 1 | 1 | 2 | . | . | . | . | |||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | 2 | 1 | 5 | 2 | . | 1 | . | . | . | . | |||||||||
| Meadow Brown | . | . | . | . | 6 | 18 | 20 | 29 | 28 | 23 | 11 | 6 | 2 | . | . | . | . | |||||||||
| Small Heath | . | 3 | 6 | 1 | 1 | . | . | 1 | . | . | . | . | 1 | . | . | . | . | |||||||||
| Ringlet | . | . | . | . | 24 | 122 | 34 | 31 | 12 | 5 | 1 | . | . | . | . | . | . | |||||||||