
| 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 | NI | . | . | . | . | . | . | . | . | . | . | 51 | 35 | 21 | 34 | 19 | 1 | 3 | . | . | . | . | |||||
| Silver-spotted Skipper | 73 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 37 | 12 | 13 | 7 | . | 1 | |||||
| Large Skipper | 3 | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | NI | . | . | . | . | 1 | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | NI | . | . | 1 | . | 2 | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 36 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 11 | 7 | 3 | 5 | 2 | |||||
| Brimstone | NI | 4 | 3 | . | 5 | 16 | 1 | 4 | 1 | 2 | . | 1 | 2 | 10 | 5 | 34 | 9 | 6 | . | 10 | 1 | 1 | |||||
| Large White | NI | . | . | . | . | 2 | 2 | . | . | . | . | 1 | 2 | 3 | 1 | . | 3 | 2 | . | . | . | . | |||||
| Small White | NI | . | . | . | . | 1 | 2 | 1 | . | . | . | 4 | 6 | 6 | 17 | 14 | 15 | 6 | . | 1 | 2 | 3 | |||||
| Green-veined White | NI | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | 1 | . | . | . | . | 1 | |||||
| Orange Tip | NI | . | . | . | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | NI | . | . | . | 1 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | |||||
| Small Blue | NI | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | 1 | . | . | . | |||||
| Common Blue | NI | . | . | . | . | . | . | 3 | 3 | . | . | . | . | 1 | 1 | 13 | 25 | 11 | 12 | 2 | . | 1 | |||||
| Chalk-hill Blue | 1723 | . | . | . | . | . | . | . | . | . | . | 10 | 76 | 191 | 470 | 471 | 390 | 74 | 27 | 13 | . | . | |||||
| Red Admiral | 15 | . | . | . | . | . | . | . | 2 | . | . | . | . | 1 | 1 | 2 | 1 | 2 | 1 | 2 | 2 | . | |||||
| Painted Lady | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 1 | 1 | . | . | |||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | |||||
| Peacock | 14 | 1 | 1 | 1 | 1 | 2 | . | 1 | 1 | . | . | . | . | . | . | 3 | . | . | . | 1 | . | 1 | |||||
| Comma | 8 | 2 | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 2 | 2 | |||||
| Dark Green Fritillary | 10 | . | . | . | . | . | . | . | . | . | . | 4 | 2 | 1 | . | 1 | . | . | . | . | . | . | |||||
| Speckled Wood | 72 | . | . | 1 | . | 1 | 2 | 4 | 3 | 2 | 4 | 1 | 1 | 1 | 2 | 6 | 3 | 5 | 6 | 10 | 6 | 2 | |||||
| Marbled White | 184 | . | . | . | . | . | . | . | . | 5 | 31 | 60 | 28 | 3 | 2 | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 86 | . | . | . | . | . | . | . | . | . | . | 11 | 20 | 15 | 16 | 12 | 8 | 3 | . | . | . | . | |||||
| Meadow Brown | 1014 | . | . | . | . | . | . | . | . | 5 | . | 30 | 28 | 54 | 97 | 122 | 239 | 142 | 161 | 64 | 40 | 17 | |||||
| Small Heath | 71 | . | . | . | . | . | 1 | 3 | 1 | 7 | 8 | 10 | 9 | 1 | . | . | 5 | 2 | 4 | 1 | 2 | 2 | |||||
| Ringlet | 75 | . | . | . | . | . | . | . | . | 9 | 16 | 24 | 4 | . | . | . | . | . | . | . | . | . | |||||