
| 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 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | 1 | . | . | . | . | . | . | |||||
| Large Skipper | 4 | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 49 | 9 | 6 | 2 | 7 | 2 | 1 | 1 | . | . | . | . | . | . | 3 | 1 | 3 | 1 | . | 1 | . | . | |||||
| Large White | 40 | . | . | 1 | 7 | 5 | 3 | 2 | 2 | 1 | . | . | 1 | 1 | 1 | 6 | . | 1 | . | . | . | . | |||||
| Small White | NI | . | . | . | . | 1 | . | . | . | . | 1 | 2 | 7 | 6 | 8 | 12 | 5 | 8 | 2 | 1 | 1 | . | |||||
| Green-veined White | 85 | . | . | 2 | 8 | 7 | 4 | 4 | 1 | 1 | . | . | 1 | . | 6 | 18 | 8 | 6 | 1 | 3 | . | . | |||||
| Orange Tip | 31 | 2 | 8 | 6 | 5 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| White-letter Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | . | 1 | . | . | . | |||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 4 | . | . | . | . | . | . | |||||
| Common Blue | NI | . | . | 1 | . | . | . | 1 | 1 | . | . | . | . | 1 | 5 | 23 | 12 | 6 | 1 | . | . | . | |||||
| Red Admiral | 11 | . | . | . | . | . | . | . | 1 | 3 | . | . | 1 | 2 | . | 1 | . | 1 | 1 | . | . | . | |||||
| Small Tortoiseshell | 8 | 1 | 1 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 1 | . | 1 | . | . | |||||
| Peacock | 43 | 7 | 4 | 3 | 1 | 3 | . | . | . | . | . | . | . | . | 7 | 7 | 1 | 1 | . | . | . | . | |||||
| Comma | 6 | 1 | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | 1 | |||||
| Small Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 124 | . | . | 1 | . | 2 | 6 | 8 | 6 | 10 | 4 | 4 | 6 | . | 1 | 5 | 1 | 10 | 14 | 7 | 14 | 5 | |||||
| Marbled White | 29 | . | . | . | . | . | . | . | . | 1 | 6 | 8 | 11 | 2 | 1 | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 57 | . | . | . | . | . | . | . | . | . | . | . | 12 | 4 | 11 | 15 | 6 | 5 | 1 | . | . | . | |||||
| Meadow Brown | 301 | . | . | . | . | . | . | 1 | 9 | 20 | 61 | 44 | 48 | 36 | 36 | 20 | 8 | 9 | 2 | 1 | . | . | |||||
| Ringlet | 73 | . | . | . | . | . | . | . | 1 | 12 | 19 | 23 | 15 | . | 2 | 1 | . | . | . | . | . | . | |||||