
| 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 | . | . | . | . | . | . | . | 38 | 45 | 112 | 6 | 3 | 1 | . | . | . | . | |||||||||
| Silver-spotted Skipper | 71 | . | . | . | . | . | . | . | . | . | . | . | 1 | 18 | 48 | 4 | . | . | |||||||||
| Large Skipper | 19 | . | . | . | . | 1 | 4 | 5 | 3 | . | 1 | . | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | 12 | . | 1 | 1 | 4 | 3 | . | 3 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | NI | 4 | 2 | 2 | 1 | 1 | . | . | 1 | 4 | 10 | 9 | 16 | 12 | 5 | . | . | . | |||||||||
| Large White | NI | . | . | . | . | . | . | . | 1 | 3 | 1 | 2 | . | . | . | . | 2 | 1 | |||||||||
| Small White | 62 | . | . | . | . | . | . | . | 3 | . | 3 | 9 | 5 | 6 | 7 | 13 | 4 | 2 | |||||||||
| Green-veined White | 9 | . | . | . | . | 1 | . | . | . | . | . | 6 | 1 | 1 | . | . | . | . | |||||||||
| Orange Tip | NI | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | NI | 1 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 8 | . | . | . | . | . | . | . | . | . | 3 | . | . | 3 | 1 | . | . | 1 | |||||||||
| Small Blue | 8 | . | . | 1 | 2 | 1 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||||
| Common Blue | 46 | . | . | 1 | 2 | . | 1 | . | . | . | . | 1 | 3 | 15 | 21 | 1 | 1 | . | |||||||||
| Chalk-hill Blue | 1571 | . | . | . | . | . | . | . | 2 | 116 | 344 | 303 | 375 | 220 | 175 | 28 | 2 | . | |||||||||
| Red Admiral | 19 | . | . | . | 1 | . | . | 1 | . | 1 | 2 | 2 | 8 | 2 | 1 | . | . | . | |||||||||
| Small Tortoiseshell | NI | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | 2 | 1 | 1 | |||||||||
| Peacock | NI | 1 | . | . | . | . | . | . | . | 1 | 10 | 11 | 14 | 1 | . | . | . | . | |||||||||
| Comma | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||||
| Dark Green Fritillary | 7 | . | . | . | . | . | . | . | 1 | 2 | 2 | 2 | . | . | . | . | . | . | |||||||||
| Speckled Wood | NI | 2 | . | 3 | 1 | 6 | 3 | 3 | 1 | . | 3 | . | . | 2 | 2 | . | 5 | 1 | |||||||||
| Wall Brown | 2 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Marbled White | 135 | . | . | . | . | . | . | 14 | 42 | 21 | 27 | 2 | . | 1 | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 123 | . | . | . | . | . | . | . | 6 | 25 | 31 | 25 | 16 | 11 | 1 | 2 | 1 | . | |||||||||
| Meadow Brown | 1340 | . | . | . | . | . | 7 | 13 | 26 | 45 | 90 | 153 | 162 | 211 | 282 | 148 | 61 | 35 | |||||||||
| Small Heath | 132 | . | 2 | 4 | 3 | 5 | 13 | 21 | 8 | 4 | 4 | . | 1 | 6 | 29 | 5 | 12 | 1 | |||||||||
| Ringlet | NI | . | . | . | . | . | . | 18 | 30 | 9 | 6 | . | . | . | . | . | . | . | |||||||||