
| 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 | 36 | . | . | . | . | . | . | . | . | . | . | . | 1 | 14 | 10 | 4 | 5 | 2 | . | . | . | . | . | ||||
| Silver-spotted Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||
| Large Skipper | 21 | . | . | . | . | . | . | . | . | 2 | 9 | 1 | 5 | 2 | 1 | 1 | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 53 | . | . | . | 2 | 24 | 12 | 11 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 46 | . | 1 | . | 7 | 28 | 6 | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 95 | 2 | 2 | 5 | 7 | 6 | 2 | 2 | 1 | 1 | . | . | . | . | . | 20 | 21 | 5 | 7 | 5 | 1 | 6 | 2 | ||||
| Large White | 50 | . | . | . | . | . | 1 | . | . | . | 1 | . | 1 | 4 | 17 | 9 | 2 | 2 | 10 | 2 | 1 | . | . | ||||
| Small White | 10 | . | . | . | . | 1 | . | . | . | 1 | . | . | . | 2 | 2 | 2 | 1 | . | 1 | . | . | . | . | ||||
| Green-veined White | 18 | . | . | 1 | 1 | 1 | 1 | . | . | 1 | . | . | . | . | 1 | 3 | 2 | 3 | 1 | 1 | 3 | . | . | ||||
| Orange Tip | 5 | . | 1 | 1 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 15 | . | . | . | 3 | 4 | 1 | 4 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 23 | . | . | . | 1 | 3 | 2 | . | . | . | . | . | . | . | 7 | 5 | . | 2 | 2 | . | . | . | 1 | ||||
| Brown Argus | 59 | . | . | . | . | 4 | 19 | 14 | 3 | 3 | . | . | . | . | . | 1 | 6 | 5 | 2 | 1 | 2 | 1 | . | ||||
| Common Blue | 256 | . | . | . | . | 2 | 67 | 47 | 33 | 30 | 5 | . | 1 | . | . | 2 | 5 | 21 | 18 | 10 | 10 | 3 | 2 | ||||
| Chalk-hill Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||
| Holly Blue | 39 | . | . | . | 6 | 11 | 6 | . | . | . | . | . | . | . | 2 | 13 | 1 | . | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | 19 | . | . | 1 | 10 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 4 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | . | . | 1 | . | . | ||||
| Peacock | 28 | 2 | 2 | 6 | 2 | . | . | 1 | . | . | . | . | . | . | 1 | 8 | 2 | 1 | . | 2 | 1 | . | . | ||||
| Comma | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | ||||
| Pearl-bordered Fritillary | 5 | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 315 | . | . | . | . | . | . | . | . | . | 38 | 61 | 78 | 65 | 54 | 13 | 6 | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||
| Speckled Wood | 64 | 1 | 2 | 2 | 4 | 2 | 2 | 3 | 3 | 1 | 3 | . | 2 | 1 | 1 | 1 | 13 | 4 | 9 | 5 | 2 | 2 | 1 | ||||
| Marbled White | 634 | . | . | . | . | . | . | . | . | 1 | 66 | 210 | 128 | 152 | 77 | . | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 154 | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 33 | 58 | 44 | 9 | 2 | . | . | . | . | . | ||||
| Meadow Brown | 4025 | . | . | . | . | . | . | . | 1 | 3 | 25 | 32 | 42 | 77 | 147 | 525 | 856 | 862 | 701 | 386 | 220 | 79 | 71 | ||||
| Small Heath | 604 | . | . | . | . | 5 | 11 | 9 | 4 | 25 | 91 | 94 | 73 | 111 | 128 | 35 | 11 | 4 | 1 | 1 | . | . | 1 | ||||
| Ringlet | 290 | . | . | . | . | . | . | . | . | . | 46 | 90 | 89 | 58 | 7 | . | . | . | . | . | . | . | . | ||||