
| 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 | . | . | . | . | . | . | . | . | 16 | . | 37 | 10 | 2 | . | . | . | . | |||||||||
| Silver-spotted Skipper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | |||||||||
| Large Skipper | NI | . | . | . | . | . | . | 2 | 13 | . | 52 | 18 | . | . | . | . | . | . | |||||||||
| Dingy Skipper | NI | . | . | . | . | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 4 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | 4 | 10 | 1 | . | . | . | . | |||||||||
| Small White | NI | . | . | . | . | 4 | . | . | . | . | . | 5 | 1 | 2 | . | . | . | . | |||||||||
| Green-veined White | NI | . | . | . | . | . | 1 | . | . | . | . | 2 | 1 | . | . | . | . | . | |||||||||
| Green Hairstreak | NI | . | . | . | . | 4 | 3 | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Brown Argus | NI | . | . | . | . | . | . | . | 6 | . | . | . | . | . | . | . | 1 | . | |||||||||
| Common Blue | 107 | . | . | . | . | 3 | 7 | 13 | 11 | 3 | . | 7 | 3 | 12 | 8 | 6 | 3 | . | |||||||||
| Chalk-hill Blue | 30 | . | . | . | . | . | . | . | . | . | . | . | 17 | 3 | . | . | . | . | |||||||||
| Red Admiral | 3 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 161 | . | . | . | . | . | . | . | . | 1 | 2 | 2 | . | 3 | 4 | 105 | 18 | 22 | |||||||||
| Peacock | 14 | . | 1 | . | . | . | . | . | . | . | . | 6 | 2 | . | . | 1 | . | . | |||||||||
| Comma | 3 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | 1 | 10 | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 67 | . | . | . | 4 | 3 | . | . | 3 | 3 | . | . | 8 | 8 | 3 | 7 | 9 | 2 | |||||||||
| Wall Brown | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Marbled White | 219 | . | . | . | . | . | . | . | 1 | 40 | 58 | 28 | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 7 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | |||||||||
| Meadow Brown | 889 | . | . | . | . | . | . | 1 | 71 | 65 | 53 | 56 | 80 | 116 | 94 | 75 | 35 | 30 | |||||||||
| Small Heath | 159 | . | . | . | . | 6 | 6 | 8 | 32 | 30 | 15 | 8 | 7 | . | . | 2 | . | . | |||||||||
| Ringlet | 93 | . | . | . | . | . | . | . | 5 | 40 | 3 | 7 | 1 | 6 | . | . | . | . | |||||||||