
| 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 | . | . | . | . | . | . | . | . | . | 12 | 93 | 75 | 74 | 23 | 22 | 9 | 6 | . | . | . | . | |||||
| Silver-spotted Skipper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Large Skipper | 12 | . | . | . | . | . | . | . | . | 4 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 8 | . | . | . | . | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 20 | . | 2 | 2 | 3 | 4 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 65 | . | 3 | . | 1 | 5 | 3 | 7 | 4 | 4 | . | . | . | 2 | 4 | 16 | . | 9 | 1 | . | . | 1 | |||||
| Large White | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | . | |||||
| Small White | 46 | . | . | . | . | . | . | . | . | . | . | . | 4 | 9 | 8 | 12 | 5 | 3 | 1 | 1 | 2 | . | |||||
| Green-veined White | 3 | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Orange Tip | 4 | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 14 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | 2 | 1 | 1 | 3 | . | |||||
| Small Blue | 15 | . | . | . | . | . | 2 | 5 | 6 | 1 | . | . | . | 1 | . | 1 | . | . | . | . | . | . | |||||
| Brown Argus | 42 | . | . | . | . | . | . | 5 | 2 | . | . | . | . | 3 | . | 9 | 4 | 11 | 6 | 2 | . | . | |||||
| Common Blue | 333 | . | . | . | . | . | 12 | 43 | 58 | 26 | 14 | 2 | . | 1 | 13 | 29 | 35 | 48 | 38 | 5 | 2 | . | |||||
| Chalk-hill Blue | 37 | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 15 | 10 | 5 | 2 | 1 | . | . | |||||
| Adonis Blue | 27 | . | . | . | . | . | . | 4 | 1 | . | 1 | . | . | . | . | . | . | 2 | 14 | 5 | . | . | |||||
| Holly Blue | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 82 | . | . | . | . | . | . | . | . | 5 | 4 | . | . | 1 | 1 | 5 | 22 | 18 | 18 | 5 | 2 | . | |||||
| Peacock | 11 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | 3 | 4 | 1 | . | . | . | . | . | 1 | |||||
| Dark Green Fritillary | 67 | . | . | . | . | . | . | . | . | 4 | 7 | 20 | 10 | 12 | 3 | 9 | 2 | . | . | . | . | . | |||||
| Marsh Fritillary | 2 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Marbled White | 533 | . | . | . | . | . | . | . | . | 9 | 122 | 190 | 156 | 49 | 3 | 4 | . | . | . | . | . | . | |||||
| Grayling | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 343 | . | . | . | . | . | . | . | . | . | . | 26 | 44 | 143 | 55 | 47 | 26 | 2 | . | . | . | . | |||||
| Meadow Brown | 2076 | . | . | . | . | . | . | . | 3 | 35 | 62 | 130 | 94 | 238 | 335 | 525 | 255 | 178 | 148 | 40 | 20 | 2 | |||||
| Small Heath | 337 | . | . | . | . | 2 | 6 | 17 | 34 | 44 | 59 | 34 | 30 | 24 | 6 | 18 | 14 | 16 | 24 | 3 | 1 | . | |||||
| Ringlet | 52 | . | . | . | . | . | . | . | . | . | 2 | 19 | 18 | 13 | . | . | . | . | . | . | . | . | |||||