
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 48 | 74 | 46 | 18 | 2 | . | . | . | |||
| Large Skipper | . | . | . | . | . | . | . | . | . | . | 4 | 2 | 14 | 14 | 14 | 20 | 2 | 2 | . | . | . | . | . | |||
| Dingy Skipper | . | . | . | . | . | 4 | 16 | 22 | 22 | 8 | 10 | 8 | . | . | . | . | . | . | . | . | . | . | . | |||
| Grizzled Skipper | . | . | . | . | 2 | 2 | 24 | 4 | 12 | 20 | 14 | . | 2 | . | . | . | . | . | . | . | . | . | . | |||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 6 | 12 | 14 | 10 | 4 | |||
| Brimstone | 22 | 24 | 22 | 32 | 2 | 2 | 34 | 32 | 34 | 46 | 32 | 30 | 32 | 18 | . | 2 | 8 | 46 | 38 | 34 | 74 | 36 | 4 | |||
| Large White | . | . | . | 2 | . | . | . | . | . | . | 12 | . | . | . | . | . | 6 | 18 | 16 | 20 | 4 | 22 | . | |||
| Small White | . | . | 2 | 4 | . | . | . | . | . | 2 | . | . | 10 | . | 2 | 10 | 26 | 120 | 158 | 106 | 32 | 2 | 12 | |||
| Green-veined White | . | . | . | . | . | . | . | 4 | 2 | 4 | . | . | . | . | . | . | . | . | 10 | . | . | . | . | |||
| Orange Tip | . | . | . | 8 | 6 | 4 | 2 | 4 | . | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Green Hairstreak | . | . | . | . | . | . | . | 4 | 2 | 10 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | |||
| Brown Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 2 | 4 | . | |||
| Small Copper | . | . | . | . | 2 | . | 4 | . | . | 4 | 2 | . | . | . | . | . | 2 | 14 | 4 | 16 | . | 2 | . | |||
| Small Blue | . | . | . | . | . | . | . | . | 2 | 2 | 26 | 8 | . | . | . | . | . | 2 | . | . | . | . | . | |||
| Brown Argus | . | . | . | . | . | . | . | . | . | 20 | 8 | 6 | 8 | 2 | . | . | 12 | 38 | 90 | 98 | 70 | . | . | |||
| Common Blue | . | . | . | . | . | . | . | . | . | 30 | 62 | 36 | 22 | 8 | . | . | 8 | 60 | 136 | 156 | 84 | . | 4 | |||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||
| Holly Blue | . | . | . | 4 | 4 | 10 | 2 | . | . | 6 | 2 | 2 | 4 | . | . | . | 2 | 20 | 12 | 4 | 10 | . | . | |||
| Duke of Burgundy Fritillary | . | . | . | . | . | . | 8 | 2 | 8 | 12 | 4 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | . | . | . | . | . | . | . | . | . | 2 | . | 2 | 2 | . | . | 2 | 4 | 50 | 16 | 32 | 2 | . | 2 | |||
| Painted Lady | . | . | . | . | . | . | . | . | . | 6 | 16 | 10 | 18 | 12 | 2 | . | 16 | 80 | 104 | 48 | 10 | 2 | . | |||
| Small Tortoiseshell | . | 16 | 10 | 18 | . | . | 4 | . | . | . | . | . | 2 | . | 2 | . | 8 | 12 | 6 | 12 | 16 | . | . | |||
| Peacock | . | . | 2 | 6 | . | . | 4 | . | 2 | . | . | . | . | . | . | . | 2 | 40 | 30 | 2 | 6 | . | . | |||
| Comma | . | 2 | 2 | 20 | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 6 | 8 | 4 | . | 2 | 2 | 2 | |||
| Pearl-bordered Fritillary | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | |||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | |||
| Speckled Wood | . | . | 2 | 12 | 12 | 18 | 10 | . | . | 2 | 8 | 12 | 20 | 12 | 6 | 8 | 12 | 24 | 8 | 12 | 20 | 2 | 6 | |||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 24 | 20 | 28 | 10 | . | . | . | . | . | |||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 76 | 116 | 500 | 660 | 172 | 36 | . | 2 | |||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 4 | 14 | 36 | 268 | 496 | 586 | 658 | 412 | 198 | 46 | 14 | |||
| Small Heath | . | . | . | . | . | . | . | . | 4 | 18 | 58 | 116 | 202 | 124 | 70 | 66 | 48 | 18 | 10 | 72 | 114 | 34 | 22 | |||
| Ringlet | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 56 | 26 | . | . | . | . | . | . | |||