
| 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 | NI | . | . | . | . | . | . | . | 1 | . | 21 | 60 | 19 | 26 | 7 | 9 | . | 1 | . | . | . | . | |||||
| Silver-spotted Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | |||||
| Large Skipper | 12 | . | . | . | . | . | . | 2 | 4 | 3 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 23 | . | . | 2 | 13 | 7 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 13 | . | . | 3 | 6 | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 40 | 3 | 6 | 8 | 2 | 4 | . | 1 | . | . | . | 2 | 4 | 2 | 3 | 5 | . | . | . | . | . | . | |||||
| Large White | 30 | . | . | . | 1 | . | . | . | . | . | 2 | 2 | . | 1 | 9 | 3 | 2 | 1 | . | 2 | 4 | . | |||||
| Small White | 92 | . | . | . | 1 | . | . | . | . | . | 2 | 1 | 4 | 15 | 6 | 7 | 8 | 8 | 4 | 24 | . | . | |||||
| Green-veined White | 3 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | |||||
| Small Copper | 19 | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | 1 | 1 | 1 | 1 | 4 | 3 | 2 | |||||
| Small Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | 32 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | 6 | 2 | 8 | 4 | 5 | . | . | |||||
| Common Blue | 248 | . | . | . | 1 | 5 | . | 11 | 7 | 6 | . | 1 | 5 | 17 | 27 | 64 | 32 | 31 | 24 | 11 | . | . | |||||
| Chalk-hill Blue | 66 | . | . | . | . | . | . | . | . | . | . | . | 2 | 14 | 19 | 17 | 4 | 7 | 3 | . | . | . | |||||
| Adonis Blue | 20 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 5 | 4 | . | . | |||||
| Red Admiral | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Small Tortoiseshell | 63 | . | . | . | . | . | . | . | . | . | . | . | . | . | 16 | 19 | 11 | 14 | 1 | 1 | . | . | |||||
| Peacock | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Dark Green Fritillary | 44 | . | . | . | . | . | . | . | 6 | 2 | 11 | 5 | 11 | 9 | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 2 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Marbled White | 93 | . | . | . | . | . | . | . | 6 | 21 | 35 | 16 | 15 | . | . | . | . | . | . | . | . | . | |||||
| Grayling | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 22 | . | . | . | . | . | . | . | . | . | . | 5 | 9 | 5 | 2 | 1 | . | . | . | . | . | . | |||||
| Meadow Brown | 1142 | . | . | . | . | . | 2 | 16 | 90 | 119 | 60 | 51 | 36 | 115 | 145 | 160 | 100 | 115 | 78 | 35 | 1 | 1 | |||||
| Small Heath | 661 | . | . | . | 7 | 22 | 3 | 37 | 85 | 74 | 40 | 19 | 12 | 4 | 20 | 43 | 46 | 40 | 64 | 93 | 3 | 1 | |||||
| Ringlet | 68 | . | . | . | . | . | . | . | 1 | 4 | 7 | 43 | 12 | 1 | . | . | . | . | . | . | . | . | |||||