
| 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 | 86 | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 17 | 9 | . | 1 | . | . | . | ||||||
| Small Skipper | NI | . | . | . | . | . | . | . | . | . | 1 | 3 | 5 | 15 | 12 | 8 | 5 | 2 | 1 | . | . | ||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 5 | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 13 | . | . | . | . | 1 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 35 | . | 4 | 1 | 4 | 1 | 1 | 2 | 1 | 1 | . | . | . | . | 2 | . | . | 4 | 3 | 1 | . | ||||||
| Small White | 45 | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | 2 | 2 | 9 | 7 | 13 | . | . | ||||||
| Green-veined White | 13 | . | . | . | . | . | 3 | 2 | . | . | . | . | . | . | . | 1 | 3 | . | 1 | . | . | ||||||
| Orange Tip | 10 | . | . | . | 1 | . | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Small Blue | 8 | . | . | . | . | . | 1 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Argus | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | ||||||
| Common Blue | 95 | . | . | . | . | . | . | 1 | 13 | 6 | 1 | . | . | . | . | 1 | 2 | 23 | 23 | 2 | . | ||||||
| Chalk-hill Blue | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 3 | 3 | . | 2 | . | ||||||
| Small Tortoiseshell | 15 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 4 | 2 | . | ||||||
| Peacock | 5 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | ||||||
| Dark Green Fritillary | 9 | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 5 | 1 | . | 1 | . | . | . | ||||||
| Speckled Wood | 9 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 3 | 1 | 1 | . | ||||||
| Marbled White | 76 | . | . | . | . | . | . | . | . | 7 | 24 | 11 | 18 | . | 9 | 3 | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 288 | . | . | . | . | . | . | . | . | . | 5 | 39 | 45 | 87 | 67 | 31 | 6 | 4 | . | . | . | ||||||
| Meadow Brown | 1413 | . | . | . | . | . | . | . | 3 | 79 | 67 | 67 | 95 | 115 | 198 | 197 | 140 | 132 | 178 | 6 | 3 | ||||||
| Small Heath | 456 | . | . | . | . | . | 2 | 19 | 21 | 52 | 60 | 42 | 33 | 72 | 62 | 30 | 6 | 4 | 10 | . | . | ||||||
| Ringlet | 34 | . | . | . | . | . | . | . | . | 3 | 7 | 13 | 3 | 5 | 1 | . | . | . | . | . | . | ||||||
| Unknown White | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 1 | 7 | . | . | . | ||||||