
| 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 | 329 | . | . | . | . | . | . | . | 5 | 10 | . | 105 | 58 | 35 | 53 | 34 | 12 | . | |||||||||
| Large Skipper | 28 | . | . | . | . | . | . | 5 | 2 | 5 | 4 | . | 6 | 2 | 1 | 1 | 2 | . | |||||||||
| Dingy Skipper | 7 | . | . | . | 3 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 6 | . | . | . | 2 | 1 | . | 1 | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | |||||||||
| Brimstone | 98 | 5 | 7 | 11 | 6 | 6 | 5 | 5 | 3 | 4 | 2 | . | 1 | . | 4 | 12 | 4 | 5 | |||||||||
| Large White | 23 | . | . | . | . | . | . | . | 1 | . | 1 | 3 | 3 | 4 | 5 | 2 | 4 | . | |||||||||
| Small White | NI | . | 1 | 1 | 1 | . | . | . | . | . | 1 | 12 | 21 | 38 | 50 | 59 | 21 | 2 | |||||||||
| Green-veined White | 5 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 3 | . | . | . | |||||||||
| Green Hairstreak | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 10 | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 4 | 3 | . | 1 | |||||||||
| Small Blue | 12 | . | . | . | 1 | . | 3 | 1 | 3 | . | . | . | 1 | 2 | . | . | . | . | |||||||||
| Brown Argus | NI | . | . | . | . | . | . | 4 | 3 | 3 | 1 | . | . | . | 6 | 6 | 10 | 1 | |||||||||
| Common Blue | NI | . | . | . | . | 1 | 4 | 8 | 4 | 6 | 6 | 1 | 1 | . | 15 | 21 | 29 | 1 | |||||||||
| Chalk-hill Blue | 18 | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | 6 | 5 | 2 | . | |||||||||
| Adonis Blue | 15 | . | . | . | . | . | . | 1 | 1 | . | . | 1 | 3 | . | 11 | 1 | 1 | . | |||||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Peacock | 25 | 1 | . | 2 | 1 | . | 1 | . | . | . | . | 1 | 13 | 2 | 9 | 4 | 1 | . | |||||||||
| Dark Green Fritillary | 7 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 1 | 3 | . | . | |||||||||
| Silver-washed Fritillary | 9 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 4 | 1 | 1 | . | |||||||||
| Speckled Wood | 10 | . | . | . | 2 | 1 | . | 1 | . | . | . | . | . | 1 | 1 | . | 2 | . | |||||||||
| Marbled White | 138 | . | . | . | . | . | . | . | 3 | 14 | 52 | 31 | 31 | 4 | 3 | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 78 | . | . | . | . | . | . | . | . | . | 5 | 14 | 22 | 14 | 21 | 9 | 3 | . | |||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 7 | 11 | 13 | 30 | 31 | 55 | 35 | 37 | 28 | . | |||||||||
| Small Heath | 85 | . | . | . | 1 | 8 | 8 | 3 | 15 | 14 | 11 | 4 | . | . | 4 | 5 | 11 | . | |||||||||
| Ringlet | 181 | . | . | . | . | . | . | . | 27 | 39 | 92 | 18 | 11 | 3 | 2 | . | . | . | |||||||||