
| 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 | 16 | 30 | 20 | 10 | 36 | . | 4 | 4 | |||||||||
| Large Skipper | . | . | . | . | . | . | . | . | 4 | . | 2 | . | . | 4 | . | . | . | |||||||||
| Dingy Skipper | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | . | . | . | . | 4 | 18 | 12 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | 12 | . | 4 | 8 | |||||||||
| Large White | . | . | . | . | 2 | 4 | 2 | . | . | . | 2 | 18 | 14 | . | 8 | 2 | 8 | |||||||||
| Small White | . | . | . | . | . | 2 | . | 2 | . | . | . | 4 | 18 | . | 8 | 32 | 6 | |||||||||
| Green-veined White | . | . | 2 | . | 10 | . | 6 | . | . | 2 | . | 14 | 12 | . | 4 | 4 | . | |||||||||
| Orange Tip | . | . | 2 | . | 12 | 12 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | . | . | . | . | . | 2 | 4 | . | . | . | . | 10 | 2 | 24 | 24 | 8 | 6 | |||||||||
| Common Blue | . | . | . | . | . | . | 60 | 12 | 10 | 2 | 10 | . | 2 | 10 | 42 | 38 | 50 | |||||||||
| Holly Blue | . | . | . | . | 4 | 4 | . | . | . | . | . | . | . | 4 | 2 | 4 | . | |||||||||
| Red Admiral | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||||||
| Painted Lady | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 2 | 2 | 4 | |||||||||
| Small Tortoiseshell | 2 | . | . | . | 6 | . | . | . | . | . | . | 2 | 4 | . | 8 | 6 | 24 | |||||||||
| Peacock | 4 | . | 2 | . | 2 | . | . | . | . | . | . | 6 | . | 16 | 4 | 6 | . | |||||||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | 2 | . | |||||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | 6 | 4 | . | . | . | 2 | |||||||||
| Marsh Fritillary | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | . | . | 4 | 2 | 12 | 4 | 2 | . | . | . | . | . | 2 | 18 | 12 | 16 | 18 | |||||||||
| Marbled White | . | . | . | . | . | . | . | . | 2 | 36 | 14 | 40 | 34 | 10 | . | 2 | . | |||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 10 | 12 | 172 | 196 | 112 | 124 | 40 | 20 | |||||||||
| Meadow Brown | . | . | . | . | . | . | . | 32 | 460 | 468 | 766 | 912 | 794 | 268 | 1130 | 414 | 116 | |||||||||
| Small Heath | . | . | . | . | 12 | . | 18 | . | 14 | 6 | 8 | 4 | 8 | . | 118 | . | 2 | |||||||||
| Ringlet | . | . | . | . | . | . | . | . | 32 | 78 | 14 | 12 | 2 | . | . | . | . | |||||||||