
| 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 | 49 | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 11 | 10 | 11 | 7 | 2 | . | . | . | . | . | ||||
| Silver-spotted Skipper | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | 1 | . | . | . | ||||
| Large Skipper | 52 | . | . | . | . | . | . | . | . | 13 | 25 | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 99 | . | . | . | 10 | 12 | 32 | 8 | 15 | 8 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 127 | 5 | 45 | 24 | 27 | 2 | . | 7 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 167 | . | 2 | 2 | 9 | 2 | 6 | 11 | 3 | 2 | 3 | 2 | 1 | . | . | 20 | 40 | 27 | 4 | 3 | . | 5 | 1 | ||||
| Large White | 104 | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | 6 | 10 | 11 | 7 | 9 | 26 | 9 | 2 | 1 | 2 | ||||
| Small White | 47 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 3 | . | 2 | 4 | 5 | 7 | 6 | 9 | 5 | ||||
| Green-veined White | 19 | . | 1 | 1 | . | . | . | 1 | . | 1 | . | . | . | . | . | 3 | 6 | 3 | . | 1 | . | . | . | ||||
| Orange Tip | 4 | 1 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 25 | . | . | . | 1 | . | 4 | 5 | 7 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 45 | . | . | 3 | 3 | 1 | 5 | . | 1 | . | . | . | 1 | . | 1 | . | . | 2 | 3 | 7 | 5 | 2 | 7 | ||||
| Small Blue | 20 | . | . | . | . | . | . | . | 1 | 10 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brown Argus | 181 | . | . | . | . | 5 | 37 | 42 | 34 | 11 | 4 | . | . | . | 3 | 2 | 3 | 19 | 3 | 3 | . | 1 | . | ||||
| Common Blue | 567 | . | . | . | . | 2 | 54 | 118 | 94 | 113 | 90 | 3 | 8 | . | . | 1 | 7 | 11 | 9 | 3 | 1 | 1 | 3 | ||||
| Chalk-hill Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | ||||
| Holly Blue | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | 19 | . | . | . | 4 | 5 | 1 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | ||||
| Small Tortoiseshell | 23 | 1 | . | . | . | . | . | 1 | . | . | 2 | 1 | . | . | . | 1 | 4 | 1 | 9 | 2 | 1 | . | . | ||||
| Peacock | 32 | 4 | 3 | 1 | 3 | 2 | 1 | . | . | . | . | . | . | . | 2 | 3 | 3 | 2 | 1 | 2 | . | . | . | ||||
| Comma | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 4 | 3 | ||||
| Pearl-bordered Fritillary | 18 | . | . | . | 6 | 4 | 5 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 602 | . | . | . | . | . | . | . | . | 5 | 61 | 136 | 142 | 96 | 35 | 23 | 4 | 1 | . | . | . | . | . | ||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Marsh Fritillary | 10 | . | . | . | . | . | 1 | 5 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 10 | . | 3 | . | . | . | 1 | 1 | . | 1 | 1 | . | . | . | . | 1 | . | . | . | 2 | . | . | . | ||||
| Marbled White | 709 | . | . | . | . | . | . | . | . | . | 12 | 273 | 187 | 68 | 13 | 13 | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 210 | . | . | . | . | . | . | . | . | . | . | . | 3 | 15 | 83 | 65 | 32 | 8 | . | . | . | . | . | ||||
| Meadow Brown | 3993 | . | . | . | . | . | . | . | . | . | 5 | 26 | 37 | 79 | 249 | 385 | 637 | 950 | 433 | 219 | 108 | 70 | 87 | ||||
| Small Heath | 431 | . | . | . | . | . | 12 | 18 | 14 | 7 | 32 | 43 | 88 | 33 | 45 | 27 | 11 | 9 | 23 | 10 | 2 | 2 | 1 | ||||
| Ringlet | 57 | . | . | . | . | . | . | . | . | . | . | 32 | 20 | 5 | . | . | . | . | . | . | . | . | . | ||||