
| 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 | 197 | . | . | . | . | . | . | 2 | 1 | 10 | 9 | 32 | 41 | 43 | 32 | 34 | 8 | 1 | . | . | |||||||
| Large Skipper | 104 | . | . | . | . | . | . | 23 | 20 | 29 | 30 | 2 | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 72 | . | 6 | 2 | 14 | 13 | 27 | 2 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 13 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 3 | |||||||
| Large White | 64 | . | 11 | 8 | 4 | 3 | 5 | . | . | . | . | 1 | 5 | 2 | 4 | 6 | 4 | 2 | 1 | 2 | |||||||
| Small White | 44 | . | 6 | 4 | . | 1 | 2 | . | . | 2 | 3 | 4 | 4 | 3 | 2 | 6 | 3 | 1 | . | . | |||||||
| Green-veined White | 57 | . | . | 1 | 5 | . | . | . | . | 2 | 12 | 8 | 16 | 3 | 4 | 4 | 2 | . | . | . | |||||||
| Green Hairstreak | 14 | . | 6 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 13 | . | . | . | 1 | 1 | 2 | . | . | 3 | 1 | . | . | . | 1 | . | 1 | 3 | . | 1 | |||||||
| Small Blue | 4 | . | . | . | . | 1 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brown Argus | 21 | . | . | . | 5 | 6 | 5 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Common Blue | 128 | . | . | . | . | 5 | 11 | 23 | 24 | 21 | 16 | 1 | . | . | . | 8 | 14 | 5 | . | . | |||||||
| Chalk-hill Blue | 237 | . | . | . | . | . | . | . | . | . | . | 10 | 39 | 59 | 71 | 43 | 13 | 2 | . | . | |||||||
| Red Admiral | 28 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | 2 | 5 | 9 | 3 | 4 | |||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Small Tortoiseshell | 18 | . | . | . | 2 | . | . | . | . | . | 1 | 3 | 2 | 1 | 2 | . | 1 | 4 | 1 | 1 | |||||||
| Peacock | 74 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | 2 | 7 | 13 | 14 | 16 | 5 | 5 | 6 | |||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Dark Green Fritillary | 4 | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | |||||||
| Marsh Fritillary | 4 | . | . | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 14 | . | . | . | . | 1 | 3 | . | . | . | . | . | . | 2 | . | . | 6 | 2 | 1 | . | |||||||
| Wall Brown | 152 | . | 7 | 4 | 1 | . | . | . | . | . | . | . | 2 | 22 | 46 | 24 | 33 | 9 | . | . | |||||||
| Marbled White | 281 | . | . | . | . | . | . | 2 | 1 | 36 | 40 | 70 | 66 | 41 | 17 | 7 | 1 | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 33 | . | . | . | . | . | . | . | . | . | . | 4 | 11 | 11 | 6 | 1 | . | . | . | . | |||||||
| Meadow Brown | 1101 | . | . | . | . | . | . | 41 | 42 | 63 | 105 | 183 | 186 | 162 | 133 | 108 | 53 | 20 | 4 | 1 | |||||||
| Small Heath | 167 | . | . | 3 | 11 | 12 | 12 | 19 | 22 | 21 | 10 | 7 | 8 | 13 | 14 | 8 | 4 | 3 | . | . | |||||||
| Ringlet | 37 | . | . | . | . | . | . | 7 | 8 | 11 | 6 | 3 | 1 | 1 | . | . | . | . | . | . | |||||||