
| 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 | 1 | 11 | 2 | 15 | 6 | 12 | 9 | 3 | . | . | . | . | |||||
| Large Skipper | 25 | . | . | . | . | . | . | . | . | 3 | 7 | 2 | 8 | 3 | . | 1 | 1 | . | . | . | . | . | |||||
| Brimstone | 9 | 1 | . | 1 | 2 | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Large White | 44 | . | . | . | . | . | . | 1 | . | . | . | . | 3 | 7 | . | 12 | 14 | 2 | . | 1 | . | 1 | |||||
| Small White | 47 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 20 | 3 | 3 | 2 | 1 | |||||
| Green-veined White | 50 | . | . | 1 | 6 | 8 | 1 | 1 | . | . | 1 | . | . | . | 8 | 13 | . | 4 | . | . | . | . | |||||
| Orange Tip | 35 | 3 | 10 | 11 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| Common Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||
| Holly Blue | 9 | . | 1 | 1 | 2 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| White Admiral | 6 | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | . | 1 | . | . | . | . | . | . | |||||
| Red Admiral | 5 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | . | . | . | . | |||||
| Small Tortoiseshell | 9 | 2 | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | 1 | . | 1 | |||||
| Peacock | 117 | 9 | 15 | 16 | 18 | 2 | 3 | . | . | . | . | . | . | 1 | 2 | 8 | 3 | 13 | 1 | . | . | . | |||||
| Comma | 13 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 2 | 1 | . | . | . | 2 | . | |||||
| Silver-washed Fritillary | 155 | . | . | . | . | . | . | . | . | 9 | 35 | 16 | 32 | 26 | 10 | 10 | 9 | 5 | . | . | . | . | |||||
| Speckled Wood | 73 | . | 3 | 1 | . | . | 2 | 5 | 9 | 11 | 1 | . | . | . | 3 | 1 | 3 | 3 | 10 | 7 | 2 | . | |||||
| Marbled White | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 83 | . | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 25 | 24 | 16 | . | 1 | . | . | |||||
| Meadow Brown | 277 | . | . | . | . | . | . | . | . | 29 | 34 | 30 | 37 | 33 | 19 | 53 | 18 | 14 | . | 3 | . | . | |||||
| Ringlet | 118 | . | . | . | . | . | . | . | . | 1 | 4 | 3 | 28 | 46 | 13 | 15 | 5 | 2 | . | . | . | . | |||||