
| 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 | . | . | . | . | . | . | . | . | . | . | . | 6 | 31 | . | . | . | . | . | . | . | ||||||
| Small Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 23 | 21 | 1 | 4 | . | . | . | . | ||||||
| Essex Skipper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | . | 1 | 9 | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 47 | . | . | . | . | 5 | 7 | 12 | 2 | 4 | 2 | 4 | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 50 | . | . | . | . | 9 | 3 | 5 | 10 | 5 | . | 3 | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | ||||||
| Brimstone | 6 | 1 | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||
| Large White | 20 | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | 4 | 4 | . | 2 | 3 | 1 | . | ||||||
| Small White | 18 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 14 | 1 | . | . | 1 | . | ||||||
| Green-veined White | NI | . | . | . | . | . | . | 3 | . | 1 | . | . | . | . | 1 | . | . | . | 2 | . | . | ||||||
| Small Copper | NI | . | . | . | . | 3 | 3 | 3 | 1 | . | . | . | . | 3 | 5 | . | 7 | 2 | 1 | 7 | 4 | ||||||
| Brown Argus | 44 | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | 3 | 11 | 8 | . | 16 | 3 | ||||||
| Common Blue | 207 | . | . | . | . | . | 1 | . | 16 | 30 | 6 | 5 | 1 | . | 1 | 15 | 33 | 37 | 28 | 6 | 8 | ||||||
| Chalk-hill Blue | 243 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 26 | 143 | 46 | . | 5 | . | . | ||||||
| Adonis Blue | NI | . | . | . | . | . | . | 1 | . | 1 | 1 | 1 | . | . | . | . | 3 | . | 4 | 4 | . | ||||||
| Red Admiral | 26 | . | . | . | . | . | . | . | . | . | 1 | 2 | 4 | 2 | 1 | 5 | . | 1 | 2 | 2 | . | ||||||
| Painted Lady | 14 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | . | . | 1 | 1 | . | ||||||
| Small Tortoiseshell | 101 | . | 1 | . | . | . | . | . | 2 | . | . | 1 | . | . | 1 | 70 | 1 | 4 | 6 | 5 | 2 | ||||||
| Peacock | NI | 2 | 2 | 4 | . | 3 | 1 | . | . | 1 | . | . | . | . | 12 | 4 | 1 | . | . | . | . | ||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Marsh Fritillary | 42 | . | . | . | . | . | 6 | 8 | 19 | 8 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 4 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | ||||||
| Wall Brown | 3 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | ||||||
| Marbled White | 397 | . | . | . | . | . | . | . | . | . | . | . | 152 | 158 | 12 | 1 | 1 | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | . | 171 | 234 | 110 | 64 | 18 | 39 | . | . | ||||||
| Meadow Brown | 3981 | . | . | . | . | . | . | . | . | . | 23 | 119 | 148 | 451 | 635 | 586 | 528 | 296 | 114 | 47 | 18 | ||||||
| Small Heath | 1788 | . | . | . | . | 2 | 35 | 151 | 274 | 222 | 248 | 177 | 75 | 35 | 10 | 33 | 69 | 102 | 75 | 54 | 17 | ||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Chalk Carpet | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | ||||||
| Wood Tiger | NI | . | . | . | . | . | . | . | 1 | . | . | 4 | . | . | . | . | . | . | . | . | . | ||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 6 | . | . | . | . | . | . | ||||||
| The Cinnabar | NI | . | . | . | . | . | 2 | . | . | 48 | . | 6 | . | 6 | . | . | . | . | . | . | . | ||||||
| Burnet Companion | NI | . | . | . | . | . | . | . | . | 6 | . | . | . | . | . | . | . | . | . | . | . | ||||||