
| 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 | 258 | . | . | . | . | 1 | 20 | 39 | 46 | 49 | 45 | 46 | 12 | . | . | . | . | . | |||||||||
| Large Skipper | 43 | . | . | . | 1 | 13 | 11 | 7 | 4 | 2 | 1 | 2 | 2 | . | . | . | . | . | |||||||||
| Brimstone | 85 | 12 | 17 | 5 | . | . | 2 | 1 | 4 | 8 | 13 | 2 | 10 | 6 | 3 | . | . | . | |||||||||
| Large White | 12 | . | . | . | . | . | 1 | . | 2 | 3 | 1 | 1 | 1 | 2 | . | 1 | . | . | |||||||||
| Small White | 47 | . | . | . | . | . | . | 1 | . | 2 | 6 | 11 | 12 | 5 | 6 | 3 | 1 | . | |||||||||
| Green-veined White | 11 | 2 | . | 1 | . | . | . | . | . | 1 | 4 | 1 | . | . | 2 | . | . | . | |||||||||
| Orange Tip | NI | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 10 | . | . | . | . | . | . | 1 | 2 | 2 | 1 | 2 | 2 | . | . | . | . | . | |||||||||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Holly Blue | 8 | 1 | 1 | . | . | . | . | . | . | 1 | 1 | 1 | 3 | . | . | . | . | . | |||||||||
| White Admiral | 4 | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 6 | . | . | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Peacock | 4 | 1 | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | |||||||||
| Comma | 6 | . | . | . | . | . | 2 | . | . | 1 | 2 | . | . | 1 | . | . | . | . | |||||||||
| Silver-washed Fritillary | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 113 | 2 | 6 | 11 | 12 | 9 | 4 | 4 | . | 3 | 5 | 10 | 5 | 5 | 18 | 5 | 2 | . | |||||||||
| Marbled White | 126 | . | . | . | . | 3 | 19 | 30 | 41 | 17 | 14 | 2 | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 391 | . | . | . | . | . | . | . | 32 | 54 | 110 | 103 | 49 | 23 | 14 | 6 | . | . | |||||||||
| Meadow Brown | 269 | . | . | . | 2 | 19 | 36 | 41 | 46 | 39 | 39 | 35 | 5 | 1 | 2 | 3 | . | . | |||||||||
| Small Heath | 3 | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Ringlet | 122 | . | . | . | . | . | 13 | 33 | 48 | 17 | 7 | 4 | . | . | . | . | . | . | |||||||||