
| 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 | NI | . | . | . | . | . | 1 | 5 | 4 | 7 | 4 | 2 | . | . | . | . | . | . | . | ||||||||
| Brimstone | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Large White | 15 | . | . | . | . | . | . | . | . | 3 | . | 2 | 3 | 3 | . | 1 | 1 | 2 | . | ||||||||
| Small White | 19 | . | . | . | . | . | 1 | 1 | . | 5 | 8 | 3 | . | . | . | . | 1 | . | . | ||||||||
| Green-veined White | NI | . | 3 | 1 | . | . | . | . | . | . | . | 1 | 4 | 2 | 1 | . | 2 | . | . | ||||||||
| Orange Tip | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | ||||||||
| Common Blue | 8 | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 1 | 2 | . | . | . | . | ||||||||
| Holly Blue | 4 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | 1 | . | . | ||||||||
| Red Admiral | 4 | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | ||||||||
| Peacock | 13 | . | . | . | . | . | . | . | . | 6 | 5 | 2 | . | . | . | . | . | . | . | ||||||||
| Comma | NI | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | 1 | . | . | ||||||||
| Silver-washed Fritillary | 19 | . | . | . | . | . | 1 | . | . | 3 | 10 | 2 | 1 | 1 | 1 | . | . | . | . | ||||||||
| Speckled Wood | 18 | . | 2 | 3 | . | 1 | 1 | . | . | . | 2 | 1 | 1 | . | 2 | 2 | 1 | 1 | 1 | ||||||||
| Gatekeeper / Hedge Brown | 50 | . | . | . | . | . | . | . | . | 11 | 16 | 7 | 14 | 2 | . | . | . | . | . | ||||||||
| Meadow Brown | 347 | . | . | . | 6 | 30 | 76 | 34 | 17 | 44 | 68 | 33 | 18 | 9 | 7 | 3 | 2 | . | . | ||||||||