
| 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 | 95 | . | . | . | . | . | . | . | . | . | . | . | 8 | 54 | 16 | 10 | 6 | 1 | . | . | . | . | |||||
| Large Skipper | 23 | . | . | . | . | . | . | 3 | . | 1 | 1 | 2 | 5 | 1 | . | 10 | . | . | . | . | . | . | |||||
| Dingy Skipper | 37 | . | . | 2 | 5 | 8 | 8 | 8 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 32 | . | . | 3 | 7 | 7 | 12 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 171 | 2 | 14 | 10 | 20 | 27 | 33 | 29 | 4 | . | . | . | 1 | 3 | 4 | 6 | . | . | 1 | 1 | . | . | |||||
| Large White | 12 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 3 | 4 | 1 | 1 | . | . | . | |||||
| Small White | 154 | . | . | 1 | 1 | 2 | 1 | 2 | . | . | . | . | 1 | 6 | 7 | 19 | 21 | 11 | 16 | 25 | 4 | 5 | |||||
| Green-veined White | 5 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 2 | . | . | 1 | . | . | |||||
| Orange Tip | 6 | . | . | 5 | 3 | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 9 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 11 | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | 2 | . | . | 1 | 2 | . | . | 1 | |||||
| Small Blue | 30 | . | . | . | . | 1 | 10 | 11 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | 49 | . | . | . | 2 | 7 | 4 | 6 | 1 | 1 | . | . | . | . | . | . | . | 2 | 2 | 7 | . | 1 | |||||
| Common Blue | 223 | . | . | . | . | 12 | 29 | 44 | 15 | 7 | 7 | . | 2 | 1 | 3 | 8 | 16 | 11 | 21 | 2 | . | 1 | |||||
| Chalk-hill Blue | 17 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 6 | 1 | 3 | . | . | . | |||||
| Adonis Blue | 25 | . | . | . | . | 1 | 3 | 5 | . | . | . | . | . | . | . | . | . | 2 | 3 | 3 | . | . | |||||
| Holly Blue | 10 | . | . | 2 | 2 | 1 | 1 | 1 | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | |||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | 1 | . | . | . | . | . | |||||
| Small Tortoiseshell | 16 | . | . | 1 | 2 | . | . | . | 4 | 1 | 1 | 1 | 2 | . | . | 1 | 2 | . | . | . | . | 1 | |||||
| Peacock | 34 | 4 | 4 | . | . | . | 2 | . | . | . | . | . | . | 1 | 8 | 8 | 1 | . | 1 | . | . | . | |||||
| Comma | 4 | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 10 | . | . | . | . | . | . | . | 1 | . | . | . | 4 | 4 | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 15 | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 8 | 1 | . | . | . | . | . | . | |||||
| Speckled Wood | 8 | 2 | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | |||||
| Marbled White | 136 | . | . | . | . | . | . | . | . | . | 12 | 15 | 26 | 53 | 22 | 8 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 103 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 21 | 34 | 24 | 17 | 4 | 1 | . | . | . | |||||
| Meadow Brown | 1348 | . | . | . | . | . | . | . | 9 | 8 | 15 | 12 | 24 | 65 | 77 | 129 | 149 | 75 | 88 | 18 | 4 | 1 | |||||
| Small Heath | 399 | . | . | . | 1 | 11 | 24 | 25 | 36 | 40 | 63 | 20 | 30 | 21 | 5 | 2 | 2 | 7 | 17 | 35 | 4 | 3 | |||||
| Ringlet | 51 | . | . | . | . | . | . | . | 1 | . | 4 | 3 | 19 | 14 | 7 | 1 | 3 | . | . | . | . | . | |||||