
| 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 | 176 | . | . | . | . | . | . | . | . | 2 | 5 | 9 | 10 | 13 | 26 | 9 | . | . | . | . | . | . | |||||
| Large Skipper | 362 | . | . | . | . | . | 1 | . | 33 | 40 | 40 | 6 | 10 | 3 | 1 | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | NI | . | . | . | . | 2 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 125 | 8 | 8 | 5 | 17 | 5 | 2 | . | 1 | . | . | 2 | . | 11 | 29 | 8 | 3 | 2 | 22 | . | . | . | |||||
| Large White | 27 | . | . | . | . | . | . | . | 1 | . | . | . | 2 | . | 8 | . | . | 1 | . | . | . | 3 | |||||
| Small White | 50 | . | . | . | 2 | 1 | 1 | . | 1 | . | 1 | . | 4 | 10 | 6 | 8 | 14 | 2 | 8 | 2 | 1 | . | |||||
| Green-veined White | 64 | . | . | 2 | . | . | 1 | 1 | . | . | . | . | 2 | 7 | 14 | 16 | . | 1 | 4 | . | . | . | |||||
| Orange Tip | NI | . | . | 6 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| Small Copper | 9 | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | 2 | 1 | . | . | 1 | . | 1 | . | |||||
| Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Common Blue | NI | . | . | . | . | . | 2 | 1 | 3 | 1 | 2 | . | 1 | . | . | 1 | 9 | . | . | . | . | . | |||||
| Holly Blue | 4 | . | . | . | . | 1 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| White Admiral | 119 | . | . | . | . | . | . | . | . | 7 | 13 | . | 7 | 4 | . | . | . | . | . | . | . | . | |||||
| Purple Emperor | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 30 | . | . | . | . | . | . | . | 1 | . | 3 | 1 | 2 | 1 | . | . | . | . | . | . | . | 3 | |||||
| Painted Lady | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Small Tortoiseshell | 11 | 1 | 2 | 3 | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||
| Peacock | 7 | 5 | 3 | 5 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||
| Comma | NI | 6 | . | 2 | . | 2 | . | . | . | 2 | . | . | 6 | 2 | . | . | . | . | 1 | 2 | . | . | |||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | 8 | 7 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | NI | . | . | . | 7 | 44 | 13 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 640 | . | . | . | . | . | . | . | . | 5 | 43 | 10 | 60 | 44 | 48 | 40 | 9 | . | . | . | . | . | |||||
| Speckled Wood | NI | . | . | 6 | 6 | 6 | 22 | 33 | 16 | 4 | 6 | 2 | 5 | 1 | 4 | 11 | 27 | 29 | 28 | 2 | 9 | 6 | |||||
| Marbled White | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 625 | . | . | . | . | . | . | . | . | . | . | . | 6 | 53 | 153 | 169 | 7 | . | . | . | . | . | |||||
| Meadow Brown | 221 | . | . | . | . | . | . | . | . | 5 | 17 | 5 | 16 | 12 | 12 | 8 | . | 1 | 1 | . | . | . | |||||
| Small Heath | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Ringlet | 1967 | . | . | . | . | . | . | . | . | 25 | 182 | 112 | 105 | 70 | 11 | 5 | . | . | . | . | . | . | |||||