
| 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 | . | . | . | . | . | . | . | . | 2 | 7 | 4 | 19 | 55 | 35 | 32 | 12 | 1 | . | . | |||||||
| Silver-spotted Skipper | 68 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 17 | 26 | 19 | 1 | . | 2 | |||||||
| Large Skipper | 8 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | 4 | . | . | . | . | |||||||
| Dingy Skipper | NI | . | . | . | 3 | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 10 | . | . | 1 | 1 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 78 | 6 | 2 | 10 | 4 | 1 | 4 | 1 | . | . | . | 1 | 1 | . | 13 | 2 | 9 | . | . | 2 | |||||||
| Large White | NI | . | . | . | . | . | 1 | . | 1 | . | . | . | 4 | 4 | 15 | 8 | 12 | 2 | . | 1 | |||||||
| Small White | NI | . | . | . | 1 | 10 | 3 | 1 | . | . | . | 1 | 19 | 7 | 30 | 24 | 11 | 9 | 5 | 2 | |||||||
| Green-veined White | NI | . | . | . | 2 | 2 | 1 | . | . | 4 | . | . | 5 | . | . | . | 1 | . | 5 | . | |||||||
| Orange Tip | NI | . | . | . | 5 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | NI | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | NI | . | . | . | 2 | 4 | 2 | . | . | . | 3 | 1 | 4 | 7 | 15 | 7 | 2 | 1 | 2 | 3 | |||||||
| Brown Argus | NI | . | . | . | . | 2 | 23 | . | . | 1 | . | 3 | . | . | 3 | 6 | 6 | 7 | 1 | 1 | |||||||
| Common Blue | 316 | . | . | . | . | 2 | 34 | 36 | 9 | 7 | 5 | . | . | 3 | 9 | 35 | 34 | 62 | 16 | 4 | |||||||
| Chalk-hill Blue | 75 | . | . | . | . | . | . | . | . | . | . | 1 | 15 | 23 | 26 | 3 | 4 | 3 | . | . | |||||||
| Holly Blue | 37 | . | . | 2 | 12 | 5 | 3 | . | . | . | . | . | . | 2 | . | . | 3 | . | . | . | |||||||
| Red Admiral | 14 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | 1 | 3 | 4 | |||||||
| Small Tortoiseshell | 48 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 15 | 17 | 10 | |||||||
| Peacock | NI | 2 | 2 | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 4 | 2 | . | . | . | |||||||
| Comma | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Speckled Wood | 89 | . | 1 | 4 | 2 | 3 | . | 1 | 8 | 4 | 9 | 7 | . | 1 | 2 | 5 | 3 | 5 | 18 | 2 | |||||||
| Wall Brown | 3 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||
| Marbled White | 176 | . | . | . | . | . | . | 1 | . | 4 | 27 | 62 | 23 | 37 | 18 | 3 | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 102 | . | . | . | . | . | . | . | . | . | 2 | . | 19 | 22 | 24 | 20 | 13 | 2 | . | . | |||||||
| Meadow Brown | 875 | . | . | . | . | . | . | . | 5 | 37 | 30 | 60 | 178 | 112 | 149 | 153 | 71 | 43 | 28 | 4 | |||||||
| Small Heath | 276 | . | . | . | . | 7 | . | 3 | 33 | 42 | 32 | 58 | 30 | 16 | 18 | 11 | 4 | . | 2 | . | |||||||
| Ringlet | 100 | . | . | . | . | . | . | . | . | . | 38 | 44 | 11 | 6 | . | . | 1 | . | . | . | |||||||