
| 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 | . | . | . | . | . | . | . | . | 1 | 19 | 90 | 110 | 63 | 29 | 17 | 4 | . | . | ||||||||
| Large Skipper | 102 | . | . | . | . | . | . | 4 | 15 | 19 | 38 | 13 | 5 | 4 | 3 | 1 | . | . | . | ||||||||
| Wood White | 27 | . | . | . | . | . | . | . | . | . | . | . | . | . | 15 | 12 | . | . | . | ||||||||
| Brimstone | 67 | 6 | 1 | 4 | 8 | 1 | . | . | . | . | . | . | . | . | 2 | 8 | 9 | 8 | 15 | ||||||||
| Large White | 72 | . | . | 1 | 4 | 3 | . | . | . | . | 1 | 2 | 5 | 6 | 22 | 19 | 3 | . | . | ||||||||
| Small White | 483 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | 17 | 82 | 47 | 64 | 147 | 95 | ||||||||
| Green-veined White | 385 | 2 | 4 | 13 | 10 | 5 | 1 | 1 | 1 | 1 | 1 | 20 | 46 | 18 | 10 | 37 | 41 | 71 | 57 | ||||||||
| Orange Tip | 21 | . | . | 4 | 4 | 4 | 1 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | ||||||||
| Small Copper | 55 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 12 | 6 | 9 | 16 | 9 | ||||||||
| Common Blue | 40 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | 5 | 7 | 6 | 10 | 8 | ||||||||
| White Admiral | 65 | . | . | . | . | . | . | . | . | 3 | 9 | 16 | 26 | 9 | 2 | . | . | . | . | ||||||||
| Red Admiral | 29 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | 1 | 2 | 8 | 9 | ||||||||
| Painted Lady | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 2 | 1 | ||||||||
| Small Tortoiseshell | 27 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 7 | ||||||||
| Peacock | 496 | 8 | 8 | 4 | 1 | 2 | 2 | . | . | . | . | . | . | 51 | 107 | 166 | 78 | 37 | 24 | ||||||||
| Comma | 7 | . | 2 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | 1 | 1 | ||||||||
| Marsh Fritillary | 21 | . | . | . | 2 | 4 | 6 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 431 | . | 9 | 15 | 14 | 13 | 3 | 3 | 22 | 29 | 21 | 8 | 14 | 15 | 29 | 21 | 26 | 30 | 45 | ||||||||
| Wall Brown | 111 | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 25 | 47 | 20 | 14 | 3 | ||||||||
| Marbled White | 3 | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 116 | . | . | . | . | . | . | . | . | . | . | 14 | 14 | 24 | 35 | 16 | 10 | 3 | . | ||||||||
| Meadow Brown | 372 | . | . | . | . | . | . | . | 9 | 37 | 57 | 94 | 32 | 44 | 47 | 39 | 5 | 8 | . | ||||||||
| Small Heath | 9 | . | . | . | . | . | 3 | 2 | 1 | . | . | . | . | . | . | . | . | 1 | . | ||||||||
| Ringlet | 596 | . | . | . | . | . | . | . | 3 | 33 | 159 | 194 | 138 | 51 | 11 | 7 | . | . | . | ||||||||