
| 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 | 140 | . | . | . | . | . | . | . | 1 | 8 | 23 | 25 | 39 | 32 | 9 | 3 | . | . | . | . | . | . | . | ||||
| Large Skipper | 37 | . | . | . | . | 1 | 1 | 3 | 12 | 9 | 3 | 5 | 3 | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||
| Brimstone | 9 | . | 1 | 2 | 2 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | ||||
| Large White | 24 | . | . | 1 | 2 | 2 | 1 | 1 | . | . | 1 | 3 | 1 | 3 | 2 | 1 | . | . | 1 | 1 | . | . | . | ||||
| Small White | 91 | . | 2 | 3 | . | . | 1 | . | . | 1 | 2 | 6 | 7 | 6 | 6 | 9 | 15 | 9 | 8 | 4 | 4 | 2 | 2 | ||||
| Green-veined White | 83 | . | 5 | 2 | 2 | 1 | 2 | . | 2 | 1 | 6 | 6 | 4 | 9 | 6 | 6 | 7 | 5 | 4 | 5 | 2 | . | 1 | ||||
| Orange Tip | NI | . | 3 | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| White-letter Hairstreak | 7 | . | . | . | . | . | . | . | . | 2 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 12 | . | . | . | 1 | 3 | 1 | 1 | . | . | . | . | 1 | . | . | . | . | 1 | 1 | 1 | 1 | 1 | 1 | ||||
| Brown Argus | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | ||||
| Common Blue | 17 | . | . | . | 1 | 2 | 1 | 1 | . | . | . | 1 | . | . | 2 | 6 | 2 | 1 | . | . | . | . | . | ||||
| White Admiral | 3 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 26 | . | . | . | . | . | . | . | 1 | 2 | . | . | . | 2 | . | 4 | 6 | 5 | 1 | 2 | 2 | 1 | 2 | ||||
| Painted Lady | 13 | . | . | . | . | 2 | 2 | 1 | . | 1 | . | . | . | 4 | . | 1 | 1 | . | 1 | . | . | . | . | ||||
| Small Tortoiseshell | 56 | 1 | . | 2 | . | 1 | 1 | 1 | 2 | 2 | 3 | 2 | . | . | 10 | 19 | 4 | 2 | 2 | 1 | . | . | . | ||||
| Peacock | 43 | 3 | 5 | 1 | 1 | . | . | . | . | . | . | . | 1 | 12 | 10 | 4 | . | 1 | . | . | . | . | . | ||||
| Comma | 46 | . | . | 1 | . | . | . | 1 | . | 4 | 7 | 6 | 6 | 5 | 4 | 2 | . | 1 | 5 | 2 | 1 | 1 | . | ||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 84 | . | . | 3 | 3 | 6 | 5 | 4 | 5 | 3 | . | 1 | 1 | 2 | 2 | . | 10 | 16 | 6 | 4 | 2 | 3 | 2 | ||||
| Marbled White | 55 | . | . | . | . | . | . | . | 1 | 12 | 17 | 13 | 11 | 1 | . | . | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 106 | . | . | . | . | . | . | . | . | . | 4 | 9 | 16 | 38 | 21 | 17 | 1 | . | . | . | . | . | . | ||||
| Meadow Brown | 300 | . | . | . | . | . | . | 6 | 20 | 42 | 52 | 62 | 35 | 39 | 25 | 12 | 7 | . | . | . | . | . | . | ||||
| Small Heath | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| Ringlet | 194 | . | . | . | . | . | . | . | 4 | 57 | 40 | 50 | 30 | 12 | 1 | . | . | . | . | . | . | . | . | ||||