
| 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 | 16 | . | . | . | . | . | . | . | 6 | 3 | . | 4 | . | . | . | . | . | . | . | ||||||||
| Large Skipper | 30 | . | . | . | . | . | . | . | . | 1 | 10 | 6 | . | . | . | . | . | . | . | ||||||||
| Brimstone | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||||
| Large White | 40 | . | . | . | . | 1 | 1 | . | . | . | 4 | 7 | . | 5 | 4 | 1 | . | . | . | ||||||||
| Small White | NI | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 5 | 1 | . | . | . | ||||||||
| Green-veined White | NI | . | 2 | 5 | . | 4 | . | 1 | 1 | . | 6 | 17 | 5 | 5 | 2 | . | . | . | . | ||||||||
| Orange Tip | NI | 5 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Common Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Holly Blue | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| White Admiral | 19 | . | . | . | . | . | . | . | . | 2 | 3 | 3 | 5 | 3 | . | . | . | . | . | ||||||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Peacock | NI | 2 | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Comma | NI | . | . | 1 | . | . | . | . | . | . | 1 | 3 | . | . | . | . | 1 | 1 | . | ||||||||
| Silver-washed Fritillary | 212 | . | . | . | . | . | . | . | 3 | 4 | 30 | 57 | 5 | 22 | 7 | . | . | . | . | ||||||||
| Speckled Wood | 78 | . | 4 | . | 4 | 2 | 1 | . | 5 | 5 | . | 2 | . | 8 | 4 | 8 | 11 | 3 | . | ||||||||
| Gatekeeper / Hedge Brown | 91 | . | . | . | . | . | . | . | . | . | 8 | 34 | 29 | 11 | . | . | . | . | . | ||||||||
| Meadow Brown | 483 | . | . | . | . | . | . | . | 18 | 34 | 100 | 106 | 39 | 25 | 5 | 2 | . | . | . | ||||||||
| Ringlet | 316 | . | . | . | . | . | . | . | 9 | 25 | 81 | 56 | 30 | 16 | . | . | . | . | . | ||||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||||