
| 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 | 157 | . | . | . | . | . | . | . | 57.5 | 61 | 42 | 5 | 4 | . | . | . | . | . | . | ||||||||
| Essex Skipper | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | ||||||||
| Large Skipper | 107 | . | . | . | . | . | 12 | 16 | 47 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | 153 | . | 2.5 | 22 | 58 | 17 | 39 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | 16 | . | . | . | . | . | . | . | . | . | . | 6 | 8 | 2 | . | . | . | . | . | ||||||||
| Brimstone | 45 | 3 | 2 | 5 | 2 | . | . | . | . | . | 8 | 4 | 5 | 3 | . | . | 2 | 1 | 3 | ||||||||
| Large White | 82 | 1 | 3 | 10.5 | 14 | 11 | 1 | 2 | 1 | 2 | 1 | 5 | 10 | 4 | 1 | . | 1 | 3 | 3 | ||||||||
| Small White | 76 | . | 1 | 6 | 2 | 5 | 4 | . | . | 2 | 8 | 7 | 23 | 6 | 2 | 5 | . | . | . | ||||||||
| Green-veined White | 57 | . | 0.5 | . | 5 | 4 | 2 | 1 | 1.5 | 2 | 17 | 7 | 1 | 4 | 4 | 2 | 4 | . | . | ||||||||
| Orange Tip | 4 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 17 | . | 3 | 4.5 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 47 | . | . | . | 5 | 7 | 2 | . | . | . | 1 | 2 | 6 | 3 | 9 | 1 | 4 | 4 | 3 | ||||||||
| Small Blue | 25 | . | . | 0.5 | 14 | 4 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brown Argus | 54 | . | . | . | 20 | 17 | 4 | 6 | . | . | . | . | 4 | . | . | . | . | . | . | ||||||||
| Common Blue | 499 | . | . | . | . | 21 | 60 | 31 | 49 | . | . | 48 | 111 | 84 | 6 | 8 | 1 | . | . | ||||||||
| Chalk-hill Blue | 338 | . | . | . | . | . | . | . | 3.5 | 53 | 87 | 99 | 63 | 24 | 6 | 1 | . | . | . | ||||||||
| Duke of Burgundy Fritillary | 7 | . | 0.5 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 15 | . | . | . | 1 | . | . | . | 1 | . | . | 2 | . | . | 1 | . | 1 | 2 | 6 | ||||||||
| Painted Lady | 11 | . | . | 1 | . | 5 | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | ||||||||
| Small Tortoiseshell | 92 | 2 | . | . | . | 1 | . | . | 1 | 1 | 8 | 4 | 2 | 2 | 20 | 14 | 18 | 9 | 8 | ||||||||
| Peacock | 45 | 2 | 1.5 | 2.5 | 1 | . | . | . | . | 3 | 15 | 8 | 2 | 7 | 1 | . | . | . | . | ||||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | ||||||||
| Marsh Fritillary | 136 | . | . | 0.5 | 44 | 55 | 33 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 40 | . | . | 2 | 2 | . | . | . | . | . | . | 5 | 7 | 13 | 5 | 3 | 2 | . | . | ||||||||
| Wall Brown | 127 | . | . | . | 37 | 29 | 7 | . | . | . | . | 10 | 30 | 12 | 2 | . | . | . | . | ||||||||
| Marbled White | 344 | . | . | . | . | . | . | . | 113 | 107 | 62 | 5 | . | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 71 | . | . | . | . | . | . | . | 9 | 21 | 21 | 11 | 2 | 2 | . | . | . | . | . | ||||||||
| Meadow Brown | 1202 | . | . | . | . | . | 10 | 25 | 219 | 219 | 191 | 167 | 134 | 94 | 28 | 5 | . | . | . | ||||||||
| Small Heath | 365 | . | . | . | 113 | 31 | 57 | 38 | 23 | 14 | 13 | 16 | 18 | 6 | . | 3 | 2 | . | . | ||||||||
| Ringlet | 62 | . | . | . | . | . | . | . | 14.5 | 22 | 13 | 4 | 2 | . | . | . | . | . | . | ||||||||