
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | 2 | 2 | 2 | 12 | 10 | 20 | . | 4 | . | . | . | ||||||||
| Large Skipper | . | . | . | . | . | 2 | 6 | 4 | 16 | . | 2 | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | . | . | . | 4 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | . | 6 | 2 | 4 | 4 | . | . | . | . | . | . | . | 2 | 12 | 12 | 8 | . | . | ||||||||
| Large White | . | . | . | 2 | 4 | . | 2 | 10 | 16 | 8 | 22 | 56 | 30 | 34 | 20 | 14 | 4 | . | ||||||||
| Small White | . | . | . | . | 8 | 2 | . | . | . | 2 | 20 | 12 | 50 | 12 | 32 | 2 | . | 2 | ||||||||
| Green-veined White | . | 2 | . | 14 | 2 | 4 | . | . | . | . | 56 | 6 | 70 | 44 | 8 | 12 | 4 | . | ||||||||
| Orange Tip | . | 4 | 4 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | . | . | . | 22 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | . | . | . | 2 | . | . | . | . | . | 6 | . | . | 12 | . | 2 | . | . | . | ||||||||
| Common Blue | . | . | . | . | . | 4 | . | . | 4 | . | . | 6 | . | . | 4 | . | . | . | ||||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | 18 | 250 | 278 | 314 | 66 | 18 | 2 | . | ||||||||
| Adonis Blue | . | . | . | . | 8 | 2 | . | 2 | . | . | . | . | . | . | . | 2 | . | . | ||||||||
| Holly Blue | . | 2 | . | 2 | . | . | . | . | . | . | . | . | 10 | . | 2 | . | . | . | ||||||||
| Red Admiral | 2 | 2 | . | . | 2 | . | 4 | 2 | 2 | 2 | 12 | 36 | 28 | 16 | 48 | 44 | 6 | 2 | ||||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | ||||||||
| Small Tortoiseshell | . | 2 | . | 2 | . | . | . | . | . | . | 4 | . | 8 | . | . | 14 | 4 | 4 | ||||||||
| Peacock | . | 6 | 2 | 4 | . | . | 2 | . | . | . | . | 16 | 36 | 44 | 14 | 2 | . | . | ||||||||
| Comma | . | 2 | . | . | . | . | . | . | . | . | . | 2 | 4 | . | . | . | . | . | ||||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | 6 | 16 | 4 | 12 | 12 | 72 | 6 | . | . | . | . | ||||||||
| Marsh Fritillary | . | . | . | . | 18 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | . | . | . | 4 | 2 | 14 | 2 | . | . | . | . | 6 | 10 | 24 | 82 | 64 | 10 | 4 | ||||||||
| Marbled White | . | . | . | . | . | . | 6 | 10 | 10 | 22 | 26 | 14 | 10 | . | . | . | . | . | ||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 12 | 72 | 46 | 102 | 66 | 14 | . | . | . | ||||||||
| Meadow Brown | . | . | . | . | . | 4 | 36 | 50 | 64 | 60 | 82 | 174 | 250 | 532 | 188 | 300 | 76 | 46 | ||||||||
| Small Heath | . | . | . | . | 4 | 4 | . | 26 | 42 | 14 | 22 | 6 | 4 | . | . | . | . | . | ||||||||
| Ringlet | . | . | . | . | . | . | . | 116 | 160 | 160 | 102 | . | 26 | . | . | . | . | . | ||||||||