
| 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 Skipper | 232 | . | . | . | . | . | . | . | . | . | . | 10 | 45 | 71 | 45 | 17 | 17 | 2 | 1 | . | . | . | |||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | 4 | 4 | 8 | . | 2 | . | . | . | . | . | . | |||||
| Large Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 2 | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 9 | . | . | . | 2 | 5 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 45 | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | 3 | 1 | 4 | 1 | 1 | 9 | 6 | 3 | |||||
| Brimstone | 60 | 3 | 9 | 3 | 6 | 9 | . | 4 | 3 | . | . | . | . | 5 | . | 2 | 16 | 1 | 1 | 2 | . | . | |||||
| Large White | 51 | . | . | . | . | 7 | . | 6 | 1 | 3 | . | . | 11 | . | . | 5 | 6 | 7 | 1 | 3 | . | . | |||||
| Small White | 229 | . | . | . | 2 | 1 | . | 5 | . | . | . | 1 | 2 | 23 | 14 | 32 | 56 | 44 | 8 | . | 9 | . | |||||
| Green-veined White | 101 | . | . | . | 7 | 17 | 4 | 10 | 2 | 4 | 2 | 1 | 10 | 22 | . | . | 9 | 8 | 2 | 4 | 2 | . | |||||
| Orange Tip | 5 | . | . | . | 1 | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| Small Copper | 25 | . | . | . | 2 | 5 | . | 1 | 1 | 1 | . | . | . | 1 | 3 | 1 | 4 | 1 | . | 2 | 1 | . | |||||
| Brown Argus | 48 | . | . | . | . | . | 4 | 4 | 9 | 4 | 1 | . | . | 1 | 1 | 2 | 10 | 2 | 1 | 6 | 2 | 1 | |||||
| Common Blue | 193 | . | . | . | . | . | 12 | 29 | 25 | 23 | 11 | . | . | . | 2 | 12 | 19 | 16 | 12 | 9 | 12 | 5 | |||||
| Chalk-hill Blue | 30 | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 7 | 12 | 2 | . | . | 1 | 1 | |||||
| Adonis Blue | 103 | . | . | . | . | . | 1 | 13 | 16 | 14 | 1 | . | . | . | . | . | 3 | 4 | 26 | 12 | 6 | 1 | |||||
| Red Admiral | 12 | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | 2 | 1 | . | . | . | 1 | . | . | |||||
| Painted Lady | 15 | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | 1 | 1 | 5 | 2 | . | . | . | |||||
| Small Tortoiseshell | 163 | 1 | 2 | 2 | 1 | 4 | . | . | . | . | . | 14 | 32 | 32 | 7 | 1 | 2 | 7 | . | 18 | 1 | 3 | |||||
| Peacock | 71 | 1 | 8 | 3 | 8 | 5 | . | 1 | 3 | 1 | . | . | . | 4 | 4 | 14 | 4 | 3 | 2 | . | . | . | |||||
| Comma | 7 | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 4 | 1 | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 4 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 1 | . | . | . | . | . | . | |||||
| Speckled Wood | 31 | . | . | . | 2 | 1 | . | . | 2 | 1 | 1 | . | . | . | 1 | . | 4 | 5 | 4 | 3 | 4 | . | |||||
| Wall Brown | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Marbled White | 136 | . | . | . | . | . | . | . | . | . | . | 38 | 35 | 23 | 13 | 4 | 1 | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 201 | . | . | . | . | . | . | . | . | . | . | 65 | 40 | . | 145 | 28 | 21 | 4 | . | . | . | . | |||||
| Meadow Brown | 944 | . | . | . | . | . | . | . | . | . | 2 | . | 174 | 154 | . | 124 | 100 | 52 | 26 | 16 | 3 | 1 | |||||
| Small Heath | 82 | . | . | . | . | 2 | . | 3 | 6 | 11 | 13 | 5 | 9 | 8 | 3 | . | 1 | . | 1 | 3 | . | . | |||||
| Ringlet | 125 | . | . | . | . | . | . | . | . | . | . | 34 | 20 | 19 | 5 | 2 | . | . | . | . | . | . | |||||