
| 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 | NI | . | . | . | . | . | . | . | . | . | 11 | 21 | 30 | 24 | 8 | . | . | . | . | . | . | ||||||
| Large Skipper | 57 | . | . | . | . | . | . | . | 3 | 6 | 17 | 8 | 3 | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 21 | . | . | 2 | 2 | 1 | 3 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 7 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | ||||||
| Large White | 33 | . | . | 1 | 1 | 1 | 2 | 3 | 1 | . | 2 | 1 | 2 | . | 9 | 2 | 2 | . | . | . | . | ||||||
| Small White | 132 | . | 1 | . | 1 | . | . | 1 | 1 | 2 | . | 5 | 12 | 14 | 24 | 13 | 26 | 11 | 2 | . | . | ||||||
| Green-veined White | 69 | . | . | 2 | 2 | 2 | 5 | 3 | 1 | . | 2 | 5 | 4 | 7 | 7 | 3 | 10 | 4 | 1 | . | . | ||||||
| Orange Tip | 16 | . | 1 | 4 | 2 | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 9 | . | . | . | . | . | . | . | . | . | . | . | 5 | 1 | . | . | . | . | . | . | . | ||||||
| Small Copper | 70 | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 18 | 14 | 11 | 8 | 3 | 2 | . | ||||||
| Small Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Brown Argus | 107 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 14 | 25 | 30 | 21 | 2 | . | . | ||||||
| Common Blue | 121 | . | . | . | . | . | . | 1 | 3 | 4 | . | 1 | . | 4 | 19 | 26 | 29 | 18 | 1 | . | . | ||||||
| Chalk-hill Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| White Admiral | 23 | . | . | . | . | . | . | . | . | . | 4 | 7 | 4 | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 26 | . | . | . | 1 | . | . | . | . | . | 2 | . | 1 | . | . | . | . | 1 | 6 | 5 | 4 | ||||||
| Small Tortoiseshell | 56 | 2 | . | . | . | . | . | . | 4 | 8 | 9 | 4 | 2 | 3 | 3 | 4 | . | 2 | . | . | . | ||||||
| Peacock | 154 | 14 | 20 | 4 | 2 | . | 1 | 2 | . | . | . | . | 32 | 27 | 7 | 4 | . | . | . | . | . | ||||||
| Comma | 41 | 6 | 7 | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | 2 | 2 | 3 | 3 | 3 | ||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 49 | . | . | . | . | . | . | . | . | . | 1 | 9 | 13 | 12 | 1 | 1 | . | . | . | . | . | ||||||
| Speckled Wood | 76 | . | . | . | . | . | 1 | 7 | 5 | 5 | 2 | 2 | 2 | 2 | 4 | 8 | 7 | 8 | 3 | 2 | . | ||||||
| Marbled White | 7 | . | . | . | . | . | . | . | . | . | 3 | 2 | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 211 | . | . | . | . | . | . | . | . | . | . | . | 29 | 34 | 57 | 42 | 22 | 8 | . | . | . | ||||||
| Meadow Brown | 227 | . | . | . | . | . | . | . | . | 7 | 43 | 41 | 28 | 13 | 17 | 12 | 4 | 1 | . | . | . | ||||||
| Ringlet | 312 | . | . | . | . | . | . | . | . | 2 | 66 | 115 | 20 | 7 | . | . | . | . | . | . | . | ||||||