
| 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 | 102 | . | . | . | . | . | . | . | . | . | . | 3 | 7 | 33 | 8 | 22 | 24 | . | . | . | |||||||
| Large Skipper | 100 | . | . | . | . | . | . | . | 11 | 22 | 25 | 32 | 14 | . | 4 | 4 | . | . | . | . | |||||||
| Dingy Skipper | 6 | . | . | . | . | 1 | 1 | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 16 | . | . | . | 1 | 2 | 4 | 4 | 1 | 3 | 2 | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 3 | . | . | . | |||||||
| Brimstone | 135 | 4 | 11 | 12 | 9 | 8 | 11 | 6 | 6 | 1 | . | 4 | 1 | . | 1 | 27 | 16 | 1 | . | . | |||||||
| Large White | 11 | . | . | . | . | . | 1 | . | 1 | . | . | . | . | 1 | 1 | 1 | 2 | . | . | . | |||||||
| Small White | 92 | . | . | . | . | . | 2 | . | 1 | . | . | . | 1 | 1 | 23 | 11 | 23 | 4 | 3 | . | |||||||
| Green-veined White | 22 | . | . | 1 | 3 | 2 | 2 | . | . | . | . | . | . | . | 2 | 3 | 4 | 2 | . | . | |||||||
| Orange Tip | 28 | . | 4 | 4 | 4 | 5 | 2 | 4 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 2 | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 19 | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | 2 | 3 | 2 | 2 | 1 | 1 | |||||||
| Brown Argus | 86 | . | . | . | . | 1 | 5 | 1 | 6 | 4 | . | . | . | . | . | 16 | 30 | 12 | 8 | . | |||||||
| Common Blue | 184 | . | . | . | . | . | . | 6 | 11 | 12 | 1 | 7 | 5 | 4 | 11 | 18 | 45 | 14 | 7 | . | |||||||
| Chalk-hill Blue | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | |||||||
| Adonis Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Red Admiral | 228 | . | . | . | . | . | . | 5 | 6 | 6 | 1 | . | 1 | 5 | 19 | 67 | 75 | 5 | . | 1 | |||||||
| Painted Lady | 158 | . | . | . | . | 30 | 1 | 19 | 22 | 6 | . | 2 | 1 | . | 33 | 27 | 19 | . | . | . | |||||||
| Small Tortoiseshell | 28 | . | . | . | 1 | . | . | . | . | . | . | . | 11 | 1 | . | 1 | . | 9 | 1 | . | |||||||
| Peacock | 179 | . | 8 | 8 | 9 | 10 | 8 | 4 | 2 | . | . | . | . | . | 16 | 48 | 40 | 7 | 2 | . | |||||||
| Comma | 27 | 4 | 2 | 1 | 3 | . | 2 | . | . | . | . | . | 1 | 3 | 3 | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Dark Green Fritillary | 14 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 11 | 3 | . | . | . | . | |||||||
| Silver-washed Fritillary | 118 | . | . | . | . | . | . | . | . | . | . | . | 7 | 7 | 17 | 22 | 23 | 2 | . | . | |||||||
| Speckled Wood | 97 | . | . | . | 3 | . | . | . | . | 3 | . | 3 | 3 | . | 1 | 3 | 5 | 31 | 19 | 1 | |||||||
| Marbled White | 133 | . | . | . | . | . | . | . | . | . | 2 | 10 | 26 | 37 | 20 | 7 | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 205 | . | . | . | . | . | . | . | . | . | . | . | 1 | 15 | 31 | 69 | 47 | . | . | . | |||||||
| Meadow Brown | 405 | . | . | . | . | . | . | . | . | 1 | 13 | 30 | 46 | 77 | 80 | 66 | 33 | 6 | 2 | . | |||||||
| Ringlet | 190 | . | . | . | . | . | . | . | . | . | 1 | 9 | 32 | 60 | 22 | 7 | 7 | . | . | . | |||||||