
| 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 | 23 | 59 | 59 | 53 | 31 | 8 | 6 | . | ||||||||
| Large Skipper | 79 | . | . | . | . | . | . | . | 1 | 6 | 15 | 28 | 9 | 2 | . | . | . | . | . | ||||||||
| Wood White | 23 | . | . | 2 | 6 | 3 | 6 | 2 | 1 | . | . | . | . | . | 1 | 1 | . | . | . | ||||||||
| Brimstone | 57 | 2 | 13 | 5 | 2 | 2 | 2 | . | . | . | . | . | . | 1 | . | 7 | 11 | . | 3 | ||||||||
| Large White | 87 | . | . | . | 1 | 4 | 1 | . | . | . | . | . | 4 | 9 | 8 | 18 | 12 | 21 | 7 | ||||||||
| Small White | 94 | . | . | . | . | . | 1 | . | . | . | . | 1 | 1 | 6 | 7 | 12 | 19 | 26 | 20 | ||||||||
| Green-veined White | 288 | 3 | 3 | 10 | 11 | 11 | 6 | . | 2 | 1 | 4 | 7 | 11 | 59 | 38 | 17 | 29 | 30 | 31 | ||||||||
| Orange Tip | 24 | . | 1 | 10 | . | 2 | 2 | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 2 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | ||||||||
| Small Copper | 9 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | 2 | 3 | 2 | ||||||||
| Brown Argus | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 3 | 2 | 1 | ||||||||
| Common Blue | 46 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 2 | 12 | 13 | 16 | 2 | ||||||||
| Holly Blue | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| White Admiral | 51 | . | . | . | . | . | . | . | . | 1 | 7 | 11 | 11 | 7 | 1 | 2 | . | . | . | ||||||||
| Red Admiral | 56 | . | . | . | 1 | . | . | 1 | . | 1 | . | 2 | . | 3 | 2 | 4 | 5 | 4 | 32 | ||||||||
| Painted Lady | 385 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 1 | 4 | 12 | 243 | 102 | 16 | 4 | ||||||||
| Small Tortoiseshell | 103 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 2 | 5 | 32 | 32 | 29 | ||||||||
| Peacock | 430 | 5 | 4 | 4 | 1 | . | 1 | 1 | . | . | 1 | . | 2 | 22 | 107 | 111 | 109 | 45 | 12 | ||||||||
| Comma | 47 | . | 1 | . | . | . | . | . | . | . | 1 | 5 | 6 | 2 | 1 | 1 | 4 | 5 | 15 | ||||||||
| Marsh Fritillary | 17 | . | . | . | 1 | 6 | 5 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 136 | . | 1 | 7 | 6 | 7 | 8 | 4 | 4 | 7 | 16 | 5 | 4 | 4 | 11 | 17 | 6 | 3 | 18 | ||||||||
| Wall Brown | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 1 | 1 | ||||||||
| Marbled White | 40 | . | . | . | . | . | . | . | . | . | 3 | 15 | 7 | 3 | 1 | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 127 | . | . | . | . | . | . | . | . | . | . | . | 13 | 14 | 49 | 23 | 17 | 5 | . | ||||||||
| Meadow Brown | 622 | . | . | . | . | . | . | . | 1 | 4 | 35 | 104 | 109 | 93 | 106 | 36 | 23 | 5 | . | ||||||||
| Small Heath | 2 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Ringlet | 546 | . | . | . | . | . | . | . | . | . | 6 | 25 | 241 | 84 | 49 | 8 | . | . | . | ||||||||