
| 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 | 250 | . | . | . | . | . | . | . | . | . | 10 | 77 | 34 | 109 | 15 | 1 | 4 | . | . | . | |||||||
| Silver-spotted Skipper | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | . | . | 4 | . | . | |||||||
| Large Skipper | 57 | . | . | . | . | . | . | 21 | 13 | 11 | 2 | 4 | 6 | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 11 | . | . | 2 | . | 2 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 22 | . | 3 | 2 | . | 1 | 5 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Brimstone | 59 | 4 | 15 | 3 | 6 | 2 | 4 | . | . | 1 | 1 | 1 | 4 | 3 | . | 1 | 1 | . | . | 2 | |||||||
| Large White | 84 | . | 2 | 1 | 1 | . | . | . | . | . | 6 | 5 | 5 | 19 | 9 | 9 | 21 | 1 | 2 | 1 | |||||||
| Small White | 228 | 1 | 1 | . | . | 1 | 1 | . | . | . | . | 4 | 11 | 43 | 52 | 12 | 29 | 46 | 15 | . | |||||||
| Green-veined White | 59 | . | 1 | . | . | . | . | . | . | . | . | 6 | 7 | 16 | 3 | 5 | 1 | 12 | 2 | . | |||||||
| Orange Tip | 12 | . | 3 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 18 | . | 3 | 5 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 21 | . | . | . | 1 | 1 | . | 1 | . | . | . | 1 | 1 | 7 | 4 | . | . | 3 | 1 | . | |||||||
| Small Blue | 15 | . | . | . | . | 5 | 5 | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Brown Argus | 18 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 2 | . | 2 | 10 | 1 | . | |||||||
| Common Blue | 228 | . | . | . | . | 4 | 12 | 7 | 4 | 7 | . | . | . | 9 | 23 | 26 | 35 | 78 | 5 | . | |||||||
| Chalk-hill Blue | 65 | . | . | . | . | . | . | . | . | . | . | 7 | 11 | 20 | 8 | 4 | 10 | 4 | . | . | |||||||
| Duke of Burgundy Fritillary | 21 | . | . | 8 | 2 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | |||||||
| Small Tortoiseshell | 13 | . | 1 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 2 | 3 | 3 | 3 | |||||||
| Peacock | 21 | 2 | 6 | . | 2 | . | 1 | . | . | . | . | . | . | 5 | . | 1 | . | . | . | 2 | |||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | |||||||
| Speckled Wood | 53 | . | . | . | . | . | 2 | . | 3 | . | . | . | . | . | 2 | . | 15 | 20 | 5 | 1 | |||||||
| Marbled White | 249 | . | . | . | . | . | . | . | 9 | 40 | 87 | 67 | 37 | 9 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 235 | . | . | . | . | . | . | . | . | . | 7 | 49 | 37 | 116 | 17 | 3 | 5 | 1 | . | . | |||||||
| Meadow Brown | 724 | . | . | . | . | . | . | 1 | 42 | 64 | 76 | 116 | 74 | 169 | 64 | 23 | 33 | 49 | 1 | . | |||||||
| Small Heath | 93 | . | . | . | . | 1 | 3 | 2 | 4 | 12 | 14 | 21 | . | 3 | 1 | . | 6 | 19 | . | . | |||||||
| Ringlet | 265 | . | . | . | . | . | . | . | 13 | 84 | 61 | 92 | 7 | 7 | 1 | . | . | . | . | . | |||||||
| Latticed Heath | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 3 | . | . | 1 | |||||||