
| 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/Essex Skipper | NI | . | . | . | . | . | . | . | . | 3 | 5 | 7 | . | . | 1 | . | . | . | . | ||||||||
| Large Skipper | NI | . | . | . | . | . | . | . | 1 | 4 | 6 | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 19 | 3 | 3 | 2 | 2 | . | 1 | 3 | 1 | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Large White | 20 | . | . | . | 2 | 2 | . | 1 | . | . | 2 | 2 | 2 | . | . | 2 | 1 | 1 | . | ||||||||
| Small White | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green-veined White | 54 | . | . | 1 | 2 | 6 | 4 | 1 | . | 1 | 1 | 8 | 6 | 5 | 1 | 1 | 1 | 1 | . | ||||||||
| Orange Tip | 11 | . | . | 4 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Common Blue | 2 | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Holly Blue | 4 | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| White Admiral | 2 | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | ||||||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | 1 | 1 | 1 | . | ||||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| Small Tortoiseshell | 4 | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Peacock | 23 | 3 | 4 | 2 | 1 | 1 | 1 | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | ||||||||
| Comma | 38 | 3 | 3 | 1 | . | . | . | . | . | 4 | 4 | 1 | . | . | . | 2 | 8 | 5 | 1 | ||||||||
| Silver-washed Fritillary | 40 | . | . | . | . | . | . | . | . | 8 | 14 | 2 | 1 | 4 | 1 | . | . | . | . | ||||||||
| Speckled Wood | 342 | . | . | 8 | 15 | 13 | 8 | 19 | 17 | 3 | 3 | 22 | 14 | 31 | 30 | 33 | 29 | 7 | 7 | ||||||||
| Marbled White | NI | . | . | . | . | . | . | . | . | 4 | 8 | 3 | . | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 229 | . | . | . | . | . | . | . | . | . | 10 | 51 | 36 | 31 | 47 | . | . | . | . | ||||||||
| Meadow Brown | 231 | . | . | . | . | . | . | . | 5 | 45 | 37 | 33 | 20 | 25 | 10 | . | . | . | . | ||||||||
| Small Heath | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||||
| Ringlet | 115 | . | . | . | . | . | . | . | . | 50 | 33 | 10 | . | . | . | . | . | . | . | ||||||||
| Scarlet Tiger | NI | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | ||||||||
| The Cinnabar | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||