
| 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 | 62 | . | . | . | . | . | . | . | . | . | . | . | . | 20 | 22 | 17 | 3 | . | . | . | . | . | . | . | |||
| Large Skipper | 27 | . | . | . | . | . | . | 1 | 1 | . | 5 | 1 | 11 | 6 | . | 2 | . | . | . | . | . | . | . | . | |||
| Brimstone | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Large White | 24 | . | . | . | . | 1 | 5 | 1 | . | . | . | . | . | . | 2 | 8 | 4 | . | 1 | . | . | 2 | . | . | |||
| Small White | 20 | . | . | . | . | 2 | 2 | . | . | . | . | . | 3 | 1 | 1 | 1 | 7 | 2 | 1 | . | . | . | . | . | |||
| Green-veined White | 46 | . | . | 1 | 1 | 7 | 4 | 1 | . | . | . | . | 1 | 2 | 3 | 7 | . | 12 | 3 | 2 | . | 1 | . | . | |||
| Orange Tip | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Green Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | . | . | . | . | . | . | |||
| Small Copper | 13 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | . | |||
| Common Blue | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | |||
| Holly Blue | 4 | . | . | 1 | . | 2 | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | |||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | 4 | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | |||
| Small Tortoiseshell | 70 | 1 | . | . | . | 1 | 1 | . | . | . | . | 6 | 35 | 2 | 14 | 4 | 1 | . | 1 | 1 | 3 | . | . | . | |||
| Peacock | 69 | 4 | 4 | 2 | . | 2 | 1 | . | . | . | . | . | . | . | 8 | 21 | 19 | . | 1 | 1 | . | . | . | . | |||
| Small Pearl-bordered Fritillary | 13 | . | . | . | . | . | . | . | 5 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 32 | . | . | . | . | 10 | 10 | 11 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | 21 | . | . | . | . | . | . | . | . | . | 4 | 9 | 5 | . | 1 | 2 | . | . | . | . | . | . | . | . | |||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||
| Speckled Wood | 76 | . | . | 2 | 1 | 1 | 4 | 3 | . | 3 | 13 | 9 | 5 | 1 | . | . | 1 | 5 | 9 | . | 9 | 6 | 3 | . | |||
| Wall Brown | 14 | . | . | . | . | . | 8 | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 1 | . | . | . | . | |||
| Marbled White | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||
| Gatekeeper / Hedge Brown | 531 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 33 | 93 | 162 | 133 | 69 | 20 | 10 | 1 | . | . | |||
| Meadow Brown | 154 | . | . | . | . | . | . | . | . | . | 11 | 25 | 45 | 14 | 20 | 24 | 4 | 8 | 2 | 1 | . | . | . | . | |||
| Small Heath | 46 | . | . | . | . | . | 7 | 8 | 3 | 1 | 3 | 7 | 3 | 1 | 1 | 1 | 2 | 3 | 2 | 3 | 1 | . | . | . | |||
| Ringlet | 72 | . | . | . | . | . | . | . | . | . | . | 9 | 25 | 16 | 10 | 5 | 6 | . | . | . | . | . | . | . | |||