
| 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 | . | . | . | . | . | . | . | . | . | 14 | 10 | 32 | 24 | 8 | 14 | . | 2 | . | . | . | . | |||||
| Large Skipper | . | . | . | . | 2 | 4 | . | 14 | . | 30 | . | 6 | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | . | . | . | 6 | 12 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | . | . | 10 | . | 14 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Wood White | . | . | . | . | 8 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 4 | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | |||||
| Large White | . | . | . | . | 2 | 2 | . | 2 | 2 | . | 2 | 4 | 4 | 6 | 2 | . | 22 | 2 | 2 | 10 | . | |||||
| Small White | . | . | . | 12 | . | . | 2 | 2 | . | 6 | . | 10 | 2 | 8 | . | . | 16 | 2 | 8 | 10 | . | |||||
| Green-veined White | . | . | . | 2 | 6 | 4 | . | . | . | 4 | . | 20 | 20 | 6 | 14 | 12 | 4 | . | . | . | . | |||||
| Orange Tip | 6 | 20 | 14 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | 12 | 4 | . | . | . | . | . | . | |||||
| Small Copper | . | . | 10 | 6 | 10 | 2 | . | . | . | 4 | 4 | 14 | 12 | 20 | 24 | 2 | 12 | 6 | 48 | 38 | 6 | |||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||
| Common Blue | . | . | . | 16 | 104 | 52 | 16 | 64 | 16 | 6 | 2 | 6 | . | 104 | 108 | 60 | 94 | . | 32 | 2 | . | |||||
| Holly Blue | . | . | 2 | 6 | . | . | . | . | . | . | . | 2 | 6 | 12 | 6 | 2 | . | . | . | . | . | |||||
| Red Admiral | . | . | . | . | . | . | . | . | 2 | 2 | . | 2 | 2 | . | . | . | . | . | 8 | 2 | 6 | |||||
| Painted Lady | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 4 | . | 4 | . | . | . | . | |||||
| Small Tortoiseshell | . | . | . | . | . | . | . | 2 | . | 4 | . | 14 | . | 2 | 4 | . | 8 | 4 | 2 | . | . | |||||
| Peacock | 4 | . | . | . | . | . | . | . | . | 2 | . | . | . | 4 | 2 | . | 2 | 4 | . | . | . | |||||
| Comma | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | |||||
| Small Pearl-bordered Fritillary | . | . | . | . | 6 | 2 | . | 12 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | . | . | . | 2 | 6 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 2 | 4 | 6 | 14 | 8 | . | . | . | . | 10 | . | 2 | . | 4 | 22 | 22 | 8 | 2 | 16 | 2 | . | |||||
| Wall Brown | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 8 | 8 | 10 | . | . | . | . | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 4 | 24 | 22 | 4 | . | . | . | . | . | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 28 | 46 | 132 | 62 | 14 | 26 | . | 2 | . | . | |||||
| Meadow Brown | . | . | . | . | 2 | . | 16 | 86 | 164 | 770 | 312 | 642 | 502 | 272 | 184 | 78 | 134 | . | 40 | 4 | . | |||||
| Small Heath | . | . | . | 12 | 52 | 30 | 16 | 38 | 8 | 18 | 14 | 18 | 4 | 30 | 30 | 42 | 70 | 10 | 34 | 26 | . | |||||
| Ringlet | . | . | . | . | . | . | . | . | . | 40 | 22 | 48 | 26 | 2 | . | . | . | . | . | . | . | |||||