
| 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 | 23 | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 1 | 7 | 5 | 2 | . | 1 | . | . | . | . | ||||
| Large Skipper | 22 | . | . | . | . | . | . | 4 | 3 | 12 | 12 | 10 | 2 | . | 5 | . | 2 | . | . | . | . | . | . | ||||
| Brimstone | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | ||||
| Large White | 36 | . | . | 1 | 1 | . | 1 | 1 | 6 | . | . | 1 | 5 | 1 | 2 | 4 | 12 | 3 | 6 | 3 | 3 | 2 | . | ||||
| Small White | 58 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 9 | . | 4 | . | 2 | 4 | 5 | . | ||||
| Green-veined White | 86 | . | 1 | 1 | 8 | 2 | 1 | 3 | 6 | . | . | . | 3 | 6 | 23 | 14 | 5 | 5 | 13 | . | . | 2 | . | ||||
| Orange Tip | 2 | . | . | 3 | 4 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 5 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||
| Small Copper | 8 | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | . | ||||
| Common Blue | 16 | . | . | . | . | . | 2 | 1 | 4 | . | . | . | . | . | . | 1 | 1 | 4 | 14 | 1 | 2 | . | . | ||||
| Holly Blue | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | . | ||||
| Red Admiral | 3 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | 1 | ||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | 2 | 2 | . | 2 | . | . | ||||
| Small Tortoiseshell | NI | . | . | . | . | . | . | . | 2 | . | . | 2 | 1 | 2 | . | 1 | 1 | . | . | . | 1 | . | . | ||||
| Peacock | 90 | 10 | 1 | 11 | 3 | . | 2 | . | . | . | . | . | . | . | 4 | 9 | . | . | . | . | . | . | . | ||||
| Comma | 33 | 1 | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | 3 | 6 | 9 | 3 | ||||
| Small Pearl-bordered Fritillary | 19 | . | . | . | . | 4 | 7 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 42 | . | . | . | . | . | . | . | . | . | 4 | 4 | 8 | 9 | 9 | 6 | 3 | 3 | 3 | . | . | . | . | ||||
| Speckled Wood | 114 | 1 | . | 3 | 3 | 8 | 1 | 4 | 11 | 4 | 3 | 1 | 2 | . | 4 | 11 | 14 | 15 | 7 | 27 | 19 | 6 | 3 | ||||
| Marbled White | 70 | . | . | . | . | . | . | . | . | 3 | 6 | 29 | 68 | 37 | 78 | 15 | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 683 | . | . | . | . | . | . | . | . | . | . | 1 | 13 | 5 | 110 | 147 | 64 | 116 | 53 | 3 | 3 | . | . | ||||
| Meadow Brown | 182 | . | . | . | . | . | . | 2 | 8 | 17 | 65 | 32 | 40 | 27 | 40 | 34 | 15 | 22 | 8 | 4 | 1 | 3 | . | ||||
| Ringlet | 14 | . | . | . | . | . | . | . | 1 | 16 | 92 | 95 | 78 | 27 | 40 | 2 | . | . | . | . | . | . | . | ||||