
| 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 | 16 | . | . | . | . | . | 1 | 2 | . | . | 11 | . | . | . | . | . | . | . | |||||||||
| Large Skipper | 26 | . | . | . | . | 3 | . | 1 | 8 | 2 | 10 | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | NI | . | . | 5 | . | 6 | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | NI | . | . | 9 | 7 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 1 | |||||||||
| Brimstone | NI | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Large White | 67 | . | . | 4 | 4 | 3 | . | . | 1 | 4 | 17 | 13 | 4 | 2 | . | . | 1 | . | |||||||||
| Small White | 110 | . | 3 | . | . | . | . | . | 2 | 4 | 19 | 11 | 14 | 4 | 8 | 4 | 9 | 3 | |||||||||
| Green-veined White | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Orange Tip | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | NI | . | . | 6 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 13 | . | . | 2 | . | . | . | . | . | . | 2 | . | . | . | . | 4 | . | 3 | |||||||||
| Small Blue | NI | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 14 | . | . | . | . | . | . | . | . | . | 2 | . | . | 4 | . | 4 | . | . | |||||||||
| Common Blue | 65 | . | . | 3 | 2 | 10 | . | 2 | . | . | . | 1 | 4 | 3 | 1 | 22 | 1 | 2 | |||||||||
| Adonis Blue | 106 | . | . | . | . | 7 | 2 | 1 | . | . | . | . | 3 | 11 | 39 | 23 | 3 | 3 | |||||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Red Admiral | 47 | . | . | 3 | 1 | 1 | . | . | . | 2 | 2 | . | . | . | 1 | 1 | . | 39 | |||||||||
| Painted Lady | NI | . | . | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 5 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 5 | . | |||||||||
| Comma | 2 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||||||
| Marsh Fritillary | NI | . | . | 63 | 34 | 23 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 10 | . | . | 1 | . | . | . | . | . | . | 1 | . | . | 1 | 1 | 1 | . | 3 | |||||||||
| Wall Brown | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Marbled White | 182 | . | . | . | . | . | . | 21 | 78 | 52 | 22 | . | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 42 | . | . | . | . | . | . | . | 3 | 6 | 9 | 1 | 11 | . | . | . | . | . | |||||||||
| Meadow Brown | 278 | . | . | . | . | . | . | 21 | 13 | 11 | 49 | 32 | 24 | 12 | 31 | 12 | 10 | 6 | |||||||||
| Small Heath | 87 | . | . | 7 | . | 13 | 1 | 15 | 6 | 6 | 5 | . | 1 | . | 7 | 5 | . | 3 | |||||||||
| Ringlet | 157 | . | . | . | . | . | . | 39 | 58 | 4 | 10 | . | 8 | . | . | . | . | . | |||||||||