
| 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 | 3 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 4 | . | 1 | 1 | . | . | . | . | . | |||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Large Skipper | 8 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 5 | . | . | . | 16 | 26 | 11 | 20 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 19 | . | . | 4 | 4 | 2 | 6 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 2 | . | . | |||||
| Brimstone | 168 | . | 13 | 20 | 12 | 7 | 8 | 17 | 2 | . | . | 1 | . | 3 | 3 | 10 | 4 | 13 | 7 | . | . | . | |||||
| Large White | 59 | . | . | . | . | . | . | 2 | . | . | 1 | 2 | 2 | 6 | 11 | 3 | . | 1 | 1 | . | 1 | . | |||||
| Small White | 107 | . | . | . | . | . | 4 | 4 | 2 | . | 2 | 1 | 8 | 3 | 19 | 5 | 7 | 8 | 2 | 9 | 1 | . | |||||
| Green-veined White | 71 | . | . | 1 | . | 2 | . | 4 | . | 1 | . | 2 | . | . | 2 | 9 | 5 | 1 | 11 | 4 | 3 | 3 | |||||
| Orange Tip | 8 | . | 1 | 1 | 3 | . | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | NI | . | . | . | 1 | 4 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | NI | . | . | . | 1 | 2 | . | 1 | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | |||||
| Small Blue | 61 | . | . | . | . | 8 | . | 3 | 9 | . | . | . | . | 7 | 7 | 10 | . | . | 1 | . | . | . | |||||
| Brown Argus | NI | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 1 | . | . | . | |||||
| Common Blue | 119 | . | . | . | 4 | 15 | 36 | 49 | 6 | 5 | 3 | . | . | . | 3 | 9 | 31 | 32 | 14 | 94 | 65 | 1 | |||||
| Chalk-hill Blue | 54 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 12 | 5 | 7 | 3 | . | . | . | |||||
| Adonis Blue | 94 | . | . | . | 3 | 10 | 90 | 90 | 21 | 1 | . | . | . | . | . | . | . | 3 | 28 | 7 | . | . | |||||
| Holly Blue | 15 | . | 2 | 1 | 6 | . | 1 | 3 | 2 | . | . | . | . | 2 | 1 | 1 | . | 3 | . | . | . | . | |||||
| Duke of Burgundy Fritillary | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 5 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 4 | . | 1 | . | . | . | . | 2 | 1 | |||||
| Painted Lady | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 30 | . | 1 | 1 | 2 | . | . | . | . | 1 | 3 | 1 | 3 | 1 | 2 | . | . | . | 4 | 2 | 4 | . | |||||
| Peacock | 15 | . | 1 | 1 | . | . | . | 1 | . | . | . | . | . | 3 | . | 3 | . | . | . | . | . | . | |||||
| Comma | 17 | 3 | . | . | . | . | . | . | . | . | 3 | 1 | . | 2 | 1 | . | . | . | . | . | 4 | . | |||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | NI | . | . | . | . | 1 | . | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 97 | . | 1 | 1 | 2 | 1 | . | 3 | 7 | 5 | 1 | . | . | . | 2 | 8 | 9 | 13 | 22 | 18 | 12 | 2 | |||||
| Marbled White | 69 | . | . | . | . | . | . | . | . | 17 | 24 | 17 | 13 | 13 | 4 | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 691 | . | . | . | . | . | . | . | . | . | 2 | 8 | 17 | 96 | 112 | 73 | 20 | 24 | 1 | . | 1 | . | |||||
| Meadow Brown | 2973 | . | . | . | . | . | . | . | 3 | 23 | 32 | 13 | 18 | 72 | 202 | 437 | 455 | 517 | 334 | 135 | 45 | 4 | |||||
| Small Heath | 297 | . | . | . | 5 | 5 | 12 | 37 | 36 | 72 | 82 | 32 | 47 | 25 | 14 | 16 | . | 8 | 2 | . | 3 | . | |||||
| Ringlet | 17 | . | . | . | . | . | . | . | . | . | 4 | 2 | 1 | . | 2 | . | . | . | . | . | . | . | |||||