
| 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 | . | . | . | . | . | 5 | 2 | 3 | 10 | 70 | 29 | 17 | 4 | 2 | . | . | . | . | . | |||||||
| Silver-spotted Skipper | 144 | . | . | . | . | . | . | . | . | . | . | . | . | 23 | 44 | 54 | 22 | 1 | . | . | |||||||
| Large Skipper | 22 | . | . | . | . | . | 1 | 1 | 10 | 3 | 2 | . | 1 | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | NI | . | . | 2 | 27 | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | NI | . | . | 1 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 65 | 3 | 5 | 5 | 4 | 3 | 2 | 2 | 3 | . | 1 | 5 | 8 | 2 | . | . | . | . | . | 1 | |||||||
| Large White | NI | . | . | . | . | . | 1 | . | . | . | 3 | 2 | 8 | 3 | . | . | . | . | 1 | . | |||||||
| Small White | NI | . | . | 1 | 1 | 1 | . | . | . | . | 3 | 10 | 11 | 9 | 26 | 28 | 10 | 3 | 5 | 1 | |||||||
| Green-veined White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 8 | . | . | . | . | |||||||
| Orange Tip | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | NI | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | 1 | 10 | . | 16 | 9 | |||||||
| Small Blue | NI | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Brown Argus | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 5 | 1 | . | 1 | |||||||
| Common Blue | NI | . | . | . | . | 1 | 2 | 1 | 1 | . | 1 | 3 | 5 | 20 | 10 | 40 | 14 | 1 | 3 | . | |||||||
| Chalk-hill Blue | 3736 | . | . | . | . | . | . | . | . | . | 237 | 588 | 928 | 827 | 802 | 196 | 35 | 4 | . | . | |||||||
| Holly Blue | NI | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 5 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 4 | . | |||||||
| Small Tortoiseshell | NI | . | . | . | . | . | 1 | 2 | 3 | . | 1 | 1 | 3 | 4 | 3 | 3 | . | 2 | . | . | |||||||
| Peacock | NI | 1 | . | 2 | . | 1 | . | . | . | . | 4 | 7 | 2 | . | . | . | . | . | . | 1 | |||||||
| Comma | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 2 | 1 | |||||||
| Dark Green Fritillary | 13 | . | . | . | . | . | . | . | 1 | 2 | 1 | 3 | 2 | 2 | . | . | . | . | . | . | |||||||
| Speckled Wood | 36 | . | 1 | . | 1 | . | 2 | 2 | 6 | . | . | 1 | . | . | 4 | 10 | . | 2 | . | 2 | |||||||
| Wall Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Marbled White | 141 | . | . | . | . | . | . | 1 | 6 | 55 | 26 | 11 | 1 | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 244 | . | . | . | . | . | . | . | . | . | 54 | 44 | 60 | 31 | 25 | 3 | . | . | . | . | |||||||
| Meadow Brown | 1140 | . | . | . | . | . | . | 2 | 14 | 26 | 47 | 78 | 160 | 268 | 215 | 236 | 65 | 14 | 13 | 2 | |||||||
| Small Heath | 252 | . | . | . | . | 1 | . | 18 | 21 | 40 | 13 | 8 | . | 5 | 6 | 26 | 48 | 18 | 32 | 16 | |||||||
| Ringlet | 61 | . | . | . | . | . | . | . | 2 | 13 | 20 | 1 | 8 | . | . | . | . | . | . | . | |||||||