
| 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 | . | . | . | . | . | . | . | |||||
| Large Skipper | 7 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 3 | 2 | . | . | . | . | . | . | . | |||||
| Brimstone | 22 | 3 | 1 | 1 | . | 1 | 5 | . | 2 | . | 1 | . | . | . | . | . | 1 | . | . | . | 1 | . | |||||
| Large White | 71 | 1 | . | . | . | . | 5 | 12 | 10 | 3 | 9 | 2 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 | . | |||||
| Small White | 93 | 3 | . | . | . | 14 | 12 | 11 | 8 | 12 | 3 | 1 | . | . | 2 | 3 | 2 | 3 | 1 | . | 1 | . | |||||
| Green-veined White | 56 | 1 | 1 | . | . | . | 7 | 5 | 3 | . | . | . | 1 | 1 | . | 7 | 6 | 2 | 2 | 2 | 2 | 4 | |||||
| Orange Tip | 19 | 2 | . | 1 | 2 | . | 6 | . | 4 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| Silver-studded Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Common Blue | 10 | 2 | . | . | . | . | 2 | . | . | . | 2 | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 21 | . | 5 | . | 3 | 3 | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 1 | 3 | |||||
| Peacock | 28 | . | 8 | 1 | 5 | 2 | . | 1 | 1 | . | . | . | . | . | . | . | 2 | . | . | 1 | 1 | . | |||||
| Comma | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | |||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 7 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | 1 | . | . | . | |||||
| Speckled Wood | 76 | . | . | . | . | . | 3 | 1 | . | 5 | 5 | 2 | 9 | 8 | 4 | . | 2 | 2 | 1 | 2 | 11 | 7 | |||||
| Marbled White | 20 | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 10 | 2 | 1 | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 55 | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 6 | 18 | 7 | 4 | . | . | . | |||||
| Meadow Brown | 91 | . | . | . | . | . | . | . | . | . | 2 | 9 | 22 | 29 | 16 | 8 | 3 | . | . | . | . | . | |||||
| Ringlet | 14 | . | . | . | . | . | . | . | . | . | . | . | 3 | 6 | 4 | 1 | . | . | . | . | . | . | |||||