
| 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 | . | . | . | . | . | . | . | . | . | . | 4 | 8 | 11 | 13 | 23 | 7 | 1 | . | . | |||||||
| Chequered Skipper | 9 | . | . | . | . | 2 | 3 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Large Skipper | 78 | . | . | . | . | . | . | . | . | . | 15 | 21 | 17 | 9 | 4 | 2 | 2 | . | . | . | |||||||
| Brimstone | 85 | 6 | 10 | 8 | . | . | . | 2 | . | 1 | . | . | . | . | 1 | 1 | 11 | 4 | 8 | 8 | |||||||
| Large White | 92 | . | . | 1 | . | 1 | 2 | . | . | 1 | 1 | . | 5 | 3 | 24 | 12 | 26 | 6 | 3 | 2 | |||||||
| Small White | 108 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 21 | 40 | 21 | 8 | 9 | . | |||||||
| Green-veined White | 403 | 2 | 6 | 14 | 18 | 16 | 20 | 4 | 2 | 1 | . | 7 | 16 | 50 | 105 | 62 | 27 | 15 | 6 | 12 | |||||||
| Orange Tip | 23 | . | . | 3 | 12 | 4 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | |||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Common Blue | 9 | . | . | . | . | . | 1 | 1 | 1 | . | 2 | . | . | . | 1 | . | 2 | . | . | . | |||||||
| Holly Blue | 11 | . | 1 | 1 | 1 | . | 1 | 1 | . | . | . | . | . | . | 3 | . | 1 | 1 | . | 1 | |||||||
| White Admiral | 19 | . | . | . | . | . | . | . | . | . | . | . | 8 | 4 | 4 | 3 | . | . | . | . | |||||||
| Red Admiral | 35 | . | . | . | . | . | . | . | . | . | 1 | 5 | 1 | . | . | . | 1 | 3 | 15 | 8 | |||||||
| Painted Lady | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 3 | . | |||||||
| Small Tortoiseshell | 17 | . | . | 1 | . | . | . | . | . | . | . | . | 3 | 2 | 2 | 8 | . | . | . | 1 | |||||||
| Peacock | 571 | 9 | 8 | 4 | 1 | 4 | 2 | . | 1 | . | . | . | . | . | 1 | 29 | 191 | 61 | 122 | 3 | |||||||
| Comma | 23 | 2 | 4 | 1 | 1 | . | . | . | . | . | . | 2 | . | . | . | 2 | . | 1 | 6 | 2 | |||||||
| Marsh Fritillary | 78 | . | . | . | . | 12 | 15 | 22 | 28 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 379 | 8 | 29 | 22 | 13 | 9 | 4 | 10 | 10 | 2 | 15 | 15 | 8 | 11 | 35 | 29 | 40 | 27 | 10 | 28 | |||||||
| Wall Brown | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | 2 | . | . | |||||||
| Gatekeeper / Hedge Brown | 72 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 26 | 18 | 15 | 5 | 2 | . | |||||||
| Meadow Brown | 230 | . | . | . | . | . | . | . | 1 | . | 22 | 24 | 38 | 30 | 42 | 36 | 16 | 6 | 2 | . | |||||||
| Small Heath | 5 | . | . | . | . | 1 | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Ringlet | 659 | . | . | . | . | . | . | . | . | . | 43 | 81 | 146 | 199 | 109 | 54 | 5 | . | . | . | |||||||