
| 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/Essex Skipper | 56 | . | . | . | . | . | . | 1 | 15 | . | 15 | 7 | 3 | 1 | . | . | . | . | |||||||||
| Dingy Skipper | NI | . | . | . | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | NI | . | . | . | 15 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 18 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 5 | . | . | |||||||||
| Brimstone | NI | . | 8 | 18 | 11 | 7 | . | 8 | 2 | . | 1 | 10 | 13 | . | 2 | 6 | . | . | |||||||||
| Large White | NI | . | . | . | . | . | . | . | 1 | . | . | 12 | 8 | . | . | . | 2 | . | |||||||||
| Small White | 58 | . | . | . | 4 | . | . | 2 | . | . | 2 | 8 | 9 | 1 | 5 | 13 | 2 | 2 | |||||||||
| Green Hairstreak | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | |||||||||
| Small Blue | NI | . | . | . | 9 | 13 | 17 | 28 | 18 | . | . | 3 | 7 | . | . | 4 | . | . | |||||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Common Blue | 321 | . | . | . | . | 13 | 31 | 31 | 38 | 1 | 1 | 4 | 17 | 11 | 35 | 45 | 22 | 1 | |||||||||
| Chalk-hill Blue | 76 | . | . | . | . | . | . | . | . | . | . | . | . | 12 | 5 | 3 | 3 | . | |||||||||
| Adonis Blue | 205 | . | . | . | . | 2 | 4 | 43 | 13 | 1 | . | . | 3 | . | 23 | 22 | 7 | 3 | |||||||||
| Painted Lady | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | . | . | |||||||||
| Small Tortoiseshell | 25 | . | . | 1 | . | . | . | . | . | 2 | 3 | 7 | 1 | . | 1 | 1 | 2 | . | |||||||||
| Peacock | NI | . | . | 2 | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | |||||||||
| Comma | 4 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 123 | . | . | . | . | . | . | . | 7 | 13 | 6 | 9 | 12 | 5 | . | . | . | . | |||||||||
| Marsh Fritillary | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Marbled White | 115 | . | . | . | . | . | . | . | . | 11 | 22 | 5 | 1 | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 62 | . | . | . | . | . | . | . | . | . | . | 1 | 21 | 4 | . | . | . | . | |||||||||
| Meadow Brown | 2373 | . | . | . | . | . | . | . | 13 | 8 | 14 | 102 | 357 | 259 | 83 | 83 | 44 | 6 | |||||||||
| Small Heath | 379 | . | . | . | . | 9 | 14 | 33 | 119 | 33 | 46 | 5 | 8 | . | . | 10 | 13 | 3 | |||||||||
| Ringlet | 106 | . | . | . | . | . | . | . | . | 3 | 30 | 6 | 3 | . | . | . | . | . | |||||||||