
| 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/Essex Skipper | 89 | . | . | . | . | . | . | . | . | . | . | 1 | 14 | 17 | 23 | 6 | 3 | 3 | 1 | . | . | . | |||||
| Silver-spotted Skipper | 22 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 1 | 4 | . | 2 | |||||
| Large Skipper | 14 | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 4 | 3 | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 4 | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 3 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 42 | 3 | 1 | 1 | 1 | 1 | 7 | 4 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | 4 | 3 | . | 1 | 1 | . | . | |||||
| Large White | 12 | . | . | . | . | . | 1 | . | . | . | 1 | . | . | 4 | 3 | . | . | . | 1 | . | . | . | |||||
| Small White | 6 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | |||||
| Green-veined White | 77 | . | . | . | . | 1 | 1 | . | . | . | . | 1 | 1 | 7 | 3 | 10 | . | 5 | 8 | 5 | 6 | 8 | |||||
| Orange Tip | 2 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 4 | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | NI | . | . | . | . | . | 1 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | 4 | 9 | |||||
| Brown Argus | 22 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 3 | . | 4 | 4 | 1 | . | |||||
| Common Blue | 112 | . | . | . | . | 3 | . | . | . | 5 | 1 | 6 | 1 | . | . | 12 | 12 | 14 | 15 | 18 | 2 | 1 | |||||
| Chalk-hill Blue | 47 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 11 | 6 | 8 | 5 | 5 | 2 | . | |||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Red Admiral | 10 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 4 | 3 | . | . | . | . | . | |||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | |||||
| Peacock | 6 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | |||||
| Comma | 6 | . | . | 1 | . | . | 1 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 17 | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 3 | 5 | . | . | . | . | . | . | |||||
| Speckled Wood | 19 | . | . | . | . | 1 | . | . | . | 1 | . | 1 | 2 | . | 3 | 1 | . | 3 | 1 | . | 2 | . | |||||
| Marbled White | 88 | . | . | . | . | . | . | . | . | . | . | . | 5 | 25 | 21 | 7 | 11 | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 139 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 25 | 37 | 22 | 12 | 7 | 11 | . | . | |||||
| Meadow Brown | 512 | . | . | . | . | . | . | . | . | . | . | 6 | 48 | 71 | 40 | 44 | 46 | 29 | 44 | 32 | 17 | 13 | |||||
| Small Heath | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 1 | . | . | 2 | . | . | 2 | 6 | |||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | . | 20 | 25 | 5 | 2 | 3 | . | . | . | . | . | |||||