
| 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 | 28 | . | . | . | . | . | . | . | . | 1 | 2 | 8 | 5 | . | . | . | . | . | |||||||||
| Large Skipper | 75 | . | . | . | . | 1 | 10 | 32 | 7 | 8 | 7 | . | . | . | . | . | . | . | |||||||||
| Brimstone | 113 | 11 | 20 | 6 | 2 | 1 | . | . | . | . | . | 2 | 18 | 4 | 2 | 1 | 1 | 4 | |||||||||
| Large White | 27 | . | . | 3 | 2 | . | . | . | . | . | 1 | 9 | 1 | 1 | . | . | . | . | |||||||||
| Small White | 93 | . | 2 | 2 | 2 | 2 | . | . | . | . | . | 22 | 14 | 10 | 2 | 1 | 1 | . | |||||||||
| Green-veined White | 59 | . | . | . | . | . | 1 | 2 | . | . | 3 | 12 | 11 | 3 | 7 | . | . | . | |||||||||
| Orange Tip | 21 | . | 4 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||||
| Common Blue | 5 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | |||||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Holly Blue | 3 | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| White Admiral | 7 | . | . | . | . | . | . | 2 | 1 | 1 | 2 | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 7 | . | . | . | . | 1 | 1 | 1 | . | 1 | . | . | . | . | 1 | . | . | 1 | |||||||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Peacock | 55 | 2 | 2 | 1 | . | . | . | . | . | . | . | 3 | 18 | 1 | 2 | . | . | . | |||||||||
| Comma | 10 | . | 1 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 1 | 1 | 1 | . | |||||||||
| Small Pearl-bordered Fritillary | 10 | . | . | . | . | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 6 | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | 63 | . | . | . | . | . | . | 9 | 3 | 10 | 10 | 7 | 8 | . | . | . | . | . | |||||||||
| Speckled Wood | 223 | 3 | 1 | 6 | 3 | 11 | 9 | . | 2 | . | 3 | 9 | 30 | 24 | 35 | 17 | 3 | 4 | |||||||||
| Marbled White | 96 | . | . | . | . | . | . | 15 | 12 | 27 | 28 | . | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 235 | . | . | . | . | . | . | . | . | 6 | 18 | 68 | 42 | 3 | . | . | . | . | |||||||||
| Meadow Brown | 141 | . | . | . | . | . | 4 | 19 | 5 | 15 | 34 | 17 | 2 | 8 | . | . | . | . | |||||||||
| Ringlet | 863 | . | . | . | . | . | . | 242 | 167 | 220 | 145 | 8 | . | . | . | . | . | . | |||||||||