
| 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 | 14 | . | . | . | . | . | . | . | . | 1 | . | . | 4 | 2 | 4 | . | . | . | . | . | |||||||
| Large Skipper | 13 | . | . | . | . | . | . | 1 | . | 2 | 12 | . | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 13 | . | . | . | 6 | 4 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 15 | . | . | . | 4 | 4 | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 42 | 6 | 3 | 3 | 12 | 2 | 7 | 1 | . | 1 | . | . | . | 1 | . | 2 | 3 | . | 6 | 7 | |||||||
| Large White | 33 | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 1 | 6 | . | . | . | 6 | . | |||||||
| Small White | 100 | . | . | 1 | . | 2 | 7 | 3 | . | 1 | . | 2 | 35 | 16 | 10 | 1 | 5 | 1 | 3 | . | |||||||
| Green-veined White | 22 | . | . | 1 | 4 | 2 | . | . | . | . | . | 3 | 8 | 9 | . | . | . | . | . | . | |||||||
| Orange Tip | 3 | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 9 | . | . | . | 4 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 11 | . | . | 2 | 1 | 1 | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | |||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||||
| Common Blue | 306 | . | . | . | 12 | 27 | 28 | 28 | 8 | 6 | . | 1 | 17 | 39 | 53 | 28 | 29 | 25 | 1 | 11 | |||||||
| Chalk-hill Blue | 67 | . | . | . | . | . | . | . | . | . | . | 5 | 21 | 24 | 10 | 4 | 1 | 2 | 2 | . | |||||||
| Adonis Blue | 79 | . | . | . | . | 16 | 11 | 11 | 3 | 3 | . | . | 3 | 8 | 1 | . | 10 | 13 | . | 1 | |||||||
| Holly Blue | 14 | . | . | . | 2 | . | . | . | . | . | . | . | 4 | . | 1 | . | . | . | . | . | |||||||
| Red Admiral | 35 | . | . | . | 1 | . | . | 1 | 1 | . | 2 | 3 | 5 | 2 | . | 1 | . | . | 2 | 4 | |||||||
| Painted Lady | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | |||||||
| Small Tortoiseshell | 92 | 2 | . | . | . | . | . | . | . | 9 | 28 | . | . | . | . | 9 | 2 | 2 | 5 | 8 | |||||||
| Peacock | 16 | 5 | 1 | . | . | . | . | . | . | . | . | . | 1 | 4 | . | . | 1 | . | 2 | 2 | |||||||
| Comma | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | |||||||
| Speckled Wood | 79 | . | . | 1 | 4 | 11 | 12 | 9 | 1 | . | . | . | . | . | 7 | 12 | 18 | 3 | . | . | |||||||
| Wall Brown | 8 | . | . | . | . | . | . | . | . | . | . | 10 | . | . | 3 | . | . | . | . | . | |||||||
| Marbled White | 63 | . | . | . | . | . | . | . | 4 | 17 | 19 | . | . | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 419 | . | . | . | . | . | . | . | . | . | 6 | 18 | 126 | 85 | 18 | 6 | 6 | . | . | . | |||||||
| Meadow Brown | 1487 | . | . | . | . | . | . | 11 | 56 | 41 | 52 | 21 | 118 | 347 | 185 | 114 | 166 | 157 | 32 | 10 | |||||||
| Small Heath | 83 | . | . | . | 4 | 3 | 8 | 18 | 19 | 16 | 12 | . | 1 | . | 2 | 2 | . | . | 1 | . | |||||||
| Ringlet | 111 | . | . | . | . | . | . | 1 | 2 | 10 | 14 | 2 | 15 | 10 | . | . | 10 | . | . | . | |||||||