
| 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 | NI | . | . | . | . | . | 2 | 2 | 7 | 16 | 9 | 26 | 2 | 1 | . | . | . | . | . | ||||||||
| Silver-spotted Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||||
| Large Skipper | 13 | . | . | . | . | 4 | 2 | 4 | . | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 20 | . | 11 | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 74 | 3 | 6 | 4 | . | 10 | 5 | 5 | . | 1 | 12 | 7 | . | 8 | 1 | . | . | . | 2 | ||||||||
| Large White | 48 | . | . | . | 1 | 2 | . | 1 | . | 1 | 7 | 6 | 7 | 3 | 11 | 2 | . | 2 | 1 | ||||||||
| Small White | 74 | . | . | . | . | . | . | . | 2 | 3 | 19 | 11 | 6 | 12 | 6 | 3 | 5 | 5 | . | ||||||||
| Green-veined White | 78 | . | 1 | 1 | 1 | 2 | . | . | 2 | 4 | 5 | 20 | 9 | 1 | 4 | 2 | 11 | 9 | . | ||||||||
| Orange Tip | 13 | 2 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | ||||||||
| Brown Argus | 12 | . | . | . | 2 | . | 1 | . | . | . | . | 1 | . | 3 | 2 | 1 | . | 1 | . | ||||||||
| Common Blue | 118 | . | . | 4 | 3 | 1 | 10 | 4 | 1 | . | . | 20 | 9 | 12 | 15 | 16 | 12 | 6 | . | ||||||||
| Chalk-hill Blue | 41 | . | . | . | . | . | . | . | . | . | 8 | 22 | 6 | 2 | 2 | 1 | . | . | . | ||||||||
| Adonis Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||||
| Holly Blue | 2 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | ||||||||
| Duke of Burgundy Fritillary | 13 | 1 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||||
| Painted Lady | 2 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Tortoiseshell | 14 | . | . | . | . | . | . | . | 1 | . | 5 | 1 | . | 1 | . | . | . | 4 | . | ||||||||
| Peacock | 44 | 3 | . | . | . | . | . | . | . | . | 4 | 20 | 9 | 5 | 1 | . | . | . | . | ||||||||
| Comma | 5 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | 1 | . | ||||||||
| Speckled Wood | 37 | . | . | . | 1 | 3 | 5 | 1 | . | . | . | . | . | 3 | 1 | 4 | 4 | 9 | . | ||||||||
| Marbled White | 66 | . | . | . | . | . | 2 | 14 | 15 | 27 | 6 | 2 | . | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 225 | . | . | . | . | . | . | . | 13 | 19 | 60 | 91 | 30 | 12 | . | . | . | . | . | ||||||||
| Meadow Brown | 669 | . | . | . | . | 12 | 21 | 90 | 120 | 129 | 91 | 118 | 34 | 20 | 8 | 9 | 8 | 2 | . | ||||||||
| Small Heath | 58 | . | . | 1 | 1 | 1 | 14 | 8 | 4 | 1 | 1 | 2 | 1 | 3 | 3 | 11 | 3 | 2 | . | ||||||||
| Ringlet | 289 | . | . | . | . | . | 3 | 55 | 125 | 71 | 22 | 13 | . | . | . | . | . | . | . | ||||||||
| Latticed Heath | NI | . | 2 | 4 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver Y | NI | . | . | . | . | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| The Cinnabar | NI | . | . | 2 | . | . | 4 | 6 | . | . | . | 3 | . | . | . | . | . | . | . | ||||||||
| Mother Shipton | NI | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Burnet Companion | NI | . | . | 3 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||