
| 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 | . | . | . | . | . | . | . | . | 19 | 36 | 100 | 97 | 67 | 4 | 1 | . | . | |||||||||
| Silver-spotted Skipper | 57 | . | . | . | . | . | . | . | . | . | . | . | 2 | 10 | 19 | 2 | 2 | . | |||||||||
| Large Skipper | 95 | . | . | . | . | . | . | 1 | 4 | 12 | 35 | 9 | 1 | 5 | . | . | . | . | |||||||||
| Dingy Skipper | 7 | . | . | . | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 4 | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | |||||||||
| Brimstone | 66 | 3 | 2 | . | 18 | 14 | 5 | 1 | 2 | . | . | . | 3 | 1 | 2 | 1 | . | . | |||||||||
| Large White | NI | . | . | . | . | 4 | 2 | . | . | 3 | . | 6 | 10 | 15 | . | 5 | 1 | 1 | |||||||||
| Small White | NI | . | 1 | . | 3 | 1 | 4 | . | . | . | 2 | 6 | 17 | 13 | 2 | 5 | 2 | 2 | |||||||||
| Green-veined White | NI | . | . | . | 1 | 1 | 3 | . | 7 | . | 3 | 5 | 12 | 13 | 2 | . | 2 | . | |||||||||
| Orange Tip | 18 | . | . | 1 | 4 | 3 | 5 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 28 | . | . | 2 | 11 | 10 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | 1 | . | 3 | . | 1 | 4 | 1 | 1 | . | . | . | . | |||||||||
| Brown Argus | NI | . | . | 1 | . | 1 | 2 | 1 | . | . | . | . | . | 3 | 4 | 9 | 1 | 1 | |||||||||
| Common Blue | NI | . | . | . | . | 6 | 4 | . | . | 2 | . | . | 7 | 22 | 7 | 17 | 5 | 2 | |||||||||
| Chalk-hill Blue | 96 | . | . | . | . | . | . | . | . | . | 26 | 13 | 23 | 19 | 3 | 1 | . | . | |||||||||
| Holly Blue | 3 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Red Admiral | 12 | . | . | . | . | . | . | 2 | 1 | 1 | . | 1 | . | 1 | . | 1 | 1 | 1 | |||||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | |||||||||
| Small Tortoiseshell | NI | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | 1 | . | . | 1 | |||||||||
| Peacock | 11 | 1 | 1 | 1 | . | 1 | . | . | . | . | 1 | . | . | 3 | 1 | . | . | . | |||||||||
| Comma | NI | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||||||
| Dark Green Fritillary | 22 | . | . | . | . | . | . | 9 | 4 | 2 | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 68 | . | . | 3 | 4 | 3 | . | 3 | 4 | 3 | 2 | 1 | 6 | 3 | 1 | 5 | 6 | 7 | |||||||||
| Marbled White | 270 | . | . | . | . | . | . | . | 3 | 81 | 52 | 34 | 9 | 1 | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 195 | . | . | . | . | . | . | . | . | . | 30 | 58 | 50 | 33 | 5 | 2 | . | . | |||||||||
| Meadow Brown | 906 | . | . | . | . | . | . | . | 11 | 69 | 47 | 122 | 128 | 146 | 58 | 44 | 43 | 12 | |||||||||
| Small Heath | 175 | . | . | . | . | . | 2 | 4 | 13 | 36 | 41 | 10 | 5 | 5 | . | . | 1 | . | |||||||||
| Ringlet | NI | . | . | . | . | . | . | . | 1 | 31 | 13 | 5 | 8 | . | . | . | . | . | |||||||||