
| 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 | 4 | 2 | 24 | 26 | 8 | 10 | . | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | 10 | 8 | 34 | 2 | . | 6 | . | 16 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | . | 14 | . | 6 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 6 | . | . | 18 | . | . | 2 | . | . | . | 2 | . | . | . | . | . | . | 2 | . | . | ||||||
| Large White | . | . | . | . | . | 20 | . | 2 | . | . | 2 | 16 | 16 | 12 | 10 | 66 | . | 2 | 6 | 2 | ||||||
| Small White | . | 4 | 2 | . | 2 | 8 | 4 | 2 | . | . | 8 | 66 | 14 | 20 | . | . | 62 | 20 | 12 | 12 | ||||||
| Green-veined White | . | . | 2 | 16 | 16 | . | 8 | . | . | 6 | . | 16 | 10 | 84 | 86 | . | 4 | 8 | . | . | ||||||
| Orange Tip | . | . | 2 | 8 | 4 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | 12 | . | . | 4 | . | . | . | 2 | . | 4 | 2 | 4 | . | 2 | 4 | . | ||||||
| Small Blue | . | . | . | . | . | . | 10 | 2 | 6 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | ||||||
| Common Blue | . | . | . | . | . | 4 | 14 | 12 | 6 | . | . | 2 | 22 | . | 8 | . | 4 | . | . | . | ||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | 216 | 592 | 678 | 444 | . | 10 | . | . | . | ||||||
| Adonis Blue | . | . | . | . | . | 2 | 106 | 46 | 2 | 2 | . | . | . | . | . | . | 8 | 4 | . | 2 | ||||||
| Holly Blue | . | . | . | . | 2 | . | . | . | . | . | . | 4 | 2 | 2 | 2 | . | . | . | . | . | ||||||
| Red Admiral | . | 2 | 2 | . | 4 | . | . | 2 | . | . | 2 | 4 | 14 | 12 | 6 | . | 4 | 6 | 2 | 2 | ||||||
| Painted Lady | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 4 | 2 | 4 | 4 | . | . | . | . | . | 4 | 4 | 8 | 2 | 2 | . | 416 | 248 | 46 | . | 2 | ||||||
| Peacock | 2 | 16 | . | 2 | 6 | . | 2 | . | . | . | . | 4 | 52 | 36 | 36 | 14 | 2 | . | . | . | ||||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 2 | . | 10 | 2 | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | 2 | . | 38 | 64 | 32 | 76 | 10 | 14 | . | . | . | . | . | ||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | 6 | . | 2 | . | . | . | . | . | . | . | . | ||||||
| Marsh Fritillary | . | . | . | . | 10 | 4 | 12 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | . | 2 | 4 | . | 4 | 8 | 4 | 6 | . | . | . | . | . | . | . | 24 | 22 | 6 | . | . | ||||||
| Marbled White | . | . | . | . | . | . | . | . | . | 30 | 56 | 38 | 32 | 6 | . | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 2 | 34 | 138 | 100 | 76 | . | . | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | 4 | 12 | 8 | 22 | 64 | 70 | 100 | 210 | 66 | 152 | 16 | 2 | 4 | ||||||
| Small Heath | . | . | . | . | 4 | 14 | 40 | 20 | 10 | 58 | 100 | 78 | 66 | 8 | . | . | . | . | . | . | ||||||
| Ringlet | . | . | . | . | . | . | . | . | 6 | 80 | 168 | 152 | 66 | 10 | 2 | . | . | . | . | . | ||||||