
| 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 | . | . | . | . | . | . | . | . | 1 | . | 10 | 17 | 59 | 31 | 7 | 7 | 2 | 6 | . | |||||||
| Silver-spotted Skipper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | |||||||
| Dingy Skipper | 5 | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 7 | . | . | . | 1 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 121 | . | . | 1 | 9 | 8 | 6 | 4 | . | 7 | . | . | . | . | . | . | 15 | 28 | 13 | 35 | |||||||
| Large White | 48 | . | 1 | . | 4 | . | . | . | . | 2 | . | . | 5 | 5 | 10 | 1 | 10 | 4 | 6 | 1 | |||||||
| Small White | 106 | . | . | . | . | 2 | 2 | 3 | . | 4 | . | . | . | . | 3 | 1 | 35 | 27 | 16 | 13 | |||||||
| Green-veined White | 13 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | . | . | 5 | |||||||
| Orange Tip | 11 | . | . | 6 | 5 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 3 | . | . | . | 3 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 37 | . | . | . | 3 | 2 | . | . | . | . | . | . | . | 4 | 13 | 4 | 6 | 4 | . | 3 | |||||||
| Brown Argus | 43 | . | . | . | 1 | 7 | 1 | 1 | 5 | 7 | . | 3 | . | . | . | . | 4 | 5 | . | 9 | |||||||
| Common Blue | 250 | . | . | . | 2 | 40 | 33 | 21 | 18 | 55 | 2 | 20 | 12 | 1 | . | . | 4 | 11 | 18 | 14 | |||||||
| Chalk-hill Blue | 42 | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 16 | 5 | 9 | 2 | 1 | 3 | |||||||
| Holly Blue | 11 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 1 | 6 | |||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 2 | |||||||
| Small Tortoiseshell | 27 | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 4 | 3 | 8 | 3 | 1 | . | |||||||
| Peacock | 37 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 14 | 11 | 9 | 2 | |||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | |||||||
| Speckled Wood | 11 | . | . | 1 | . | . | . | . | . | 1 | 8 | . | . | . | . | . | 1 | . | . | . | |||||||
| Marbled White | 47 | . | . | . | . | . | . | . | . | . | . | 3 | 14 | 19 | 8 | 2 | 1 | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 28 | . | . | . | . | . | . | . | . | . | . | . | 4 | 9 | 4 | 2 | 3 | 3 | 3 | . | |||||||
| Meadow Brown | 544 | . | . | . | . | . | . | . | . | 1 | 14 | 63 | 88 | 77 | 92 | 78 | 62 | 32 | 19 | 18 | |||||||
| Small Heath | 202 | . | . | . | 1 | 5 | 6 | 2 | 13 | 28 | 5 | 34 | 42 | 37 | 20 | 6 | 2 | . | 1 | . | |||||||
| Ringlet | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||