
| 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 | 66 | . | . | . | . | . | . | . | . | . | . | 4 | 4 | 36 | 6 | 4 | 1 | 5 | 1 | . | . | ||||||
| Large Skipper | 49 | . | . | . | . | . | . | . | . | 13 | 2 | 8 | 5 | 6 | 1 | 1 | . | . | . | . | . | ||||||
| Grizzled Skipper | 12 | . | . | . | 1 | 4 | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 34 | . | 1 | 8 | 4 | 1 | . | . | . | 1 | . | 1 | . | 6 | 1 | 2 | 2 | . | 4 | . | . | ||||||
| Large White | 27 | . | . | . | . | 1 | . | 1 | 5 | 1 | . | . | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | ||||||
| Small White | 22 | . | 1 | . | 2 | 2 | . | 1 | 2 | 1 | . | 1 | . | 1 | 1 | 2 | 1 | 1 | 1 | . | . | ||||||
| Green-veined White | 76 | . | 1 | 1 | 2 | 2 | 1 | 5 | 3 | 8 | 1 | 2 | . | 2 | 9 | 9 | 5 | . | 2 | 2 | . | ||||||
| Orange Tip | 4 | . | 1 | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | ||||||
| Purple Hairstreak | 25 | . | . | . | . | . | . | . | . | . | . | 12 | 1 | 4 | 2 | . | . | . | . | . | . | ||||||
| Small Copper | 14 | . | . | . | . | 1 | . | . | 1 | 1 | . | . | . | 1 | 1 | 1 | . | 1 | 2 | 1 | 1 | ||||||
| Common Blue | 15 | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | 2 | . | 2 | 3 | 2 | 1 | ||||||
| Holly Blue | 6 | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | 1 | 1 | . | . | . | . | ||||||
| White Admiral | 14 | . | . | . | . | . | . | . | . | . | . | 7 | 1 | 1 | 1 | . | . | . | . | . | . | ||||||
| Red Admiral | 39 | . | . | . | 1 | . | . | 1 | 1 | 2 | . | 1 | 1 | 4 | 3 | 3 | 1 | 2 | 4 | 3 | 3 | ||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Small Tortoiseshell | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | ||||||
| Peacock | 60 | 1 | 2 | 13 | 3 | 2 | . | . | . | . | . | . | . | 7 | 3 | 10 | 3 | 3 | 3 | . | 2 | ||||||
| Comma | 15 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 6 | 1 | 1 | . | 1 | . | 1 | ||||||
| Silver-washed Fritillary | 19 | . | . | . | . | . | . | . | . | . | . | 6 | 1 | 8 | 1 | . | . | . | . | . | . | ||||||
| Speckled Wood | 76 | . | . | 1 | 3 | 2 | 1 | 1 | 2 | 5 | 2 | 4 | 1 | . | . | 1 | 4 | 5 | 5 | 2 | 14 | ||||||
| Marbled White | 25 | . | . | . | . | . | . | . | . | . | . | 12 | 2 | 4 | 1 | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 158 | . | . | . | . | . | . | . | . | . | . | 25 | 3 | 55 | 8 | 21 | 5 | 14 | 1 | . | . | ||||||
| Meadow Brown | 237 | . | . | . | . | . | . | . | 1 | 23 | 1 | 66 | 6 | 29 | . | 33 | 3 | 3 | 6 | . | 1 | ||||||
| Small Heath | 4 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Ringlet | 74 | . | . | . | . | . | . | . | . | . | . | . | . | 46 | 17 | 6 | 1 | . | . | . | . | ||||||