
| 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 | 85 | . | . | . | . | 2 | 6 | 13 | 27 | 26 | 4 | 6 | . | 1 | . | . | . | . | |||||||||
| Large Skipper | 55 | . | . | . | 2 | 2 | 8 | 10 | 19 | 12 | 1 | 1 | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 4 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||||
| Brimstone | 20 | 4 | 4 | . | . | . | . | . | 1 | 1 | . | 2 | 2 | 1 | . | . | . | . | |||||||||
| Large White | 80 | . | 2 | 3 | . | 1 | 2 | . | 1 | 4 | 11 | 13 | 20 | 8 | . | 3 | 3 | . | |||||||||
| Small White | 184 | . | 6 | 3 | 2 | 2 | . | . | 1 | . | 10 | 20 | 21 | 36 | 16 | 30 | 14 | 2 | |||||||||
| Green-veined White | 30 | . | . | 1 | . | 2 | . | 1 | 2 | . | . | 8 | 3 | 8 | 2 | 1 | 2 | . | |||||||||
| Orange Tip | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 19 | . | 1 | 4 | 6 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 112 | . | 3 | 7 | 1 | 2 | . | . | . | 3 | 8 | 15 | 7 | 13 | 4 | 12 | 15 | 1 | |||||||||
| Silver-studded Blue | 882 | . | . | 3 | 4 | 18 | 106 | 187 | 243 | 144 | 73 | 49 | 16 | 10 | 8 | 9 | 9 | 2 | |||||||||
| Common Blue | 143 | . | . | 18 | 25 | 15 | 1 | 4 | 9 | 8 | 5 | 11 | 7 | 10 | 4 | 13 | 8 | 3 | |||||||||
| Holly Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | |||||||||
| Red Admiral | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | |||||||||
| Painted Lady | 5 | . | 1 | . | . | . | 1 | . | . | 1 | . | . | . | 1 | . | . | . | . | |||||||||
| Small Tortoiseshell | 27 | 2 | 2 | 1 | . | . | . | . | 4 | 2 | . | . | 1 | . | 1 | 3 | 4 | 1 | |||||||||
| Peacock | 44 | 3 | 3 | . | . | . | . | . | . | . | . | 6 | 4 | 1 | 4 | 8 | . | 1 | |||||||||
| Comma | 4 | 1 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | |||||||||
| Grayling | 910 | . | . | . | . | . | . | 1 | 30 | 39 | 112 | 231 | 156 | 152 | 67 | 59 | 51 | 9 | |||||||||
| Gatekeeper / Hedge Brown | 232 | . | . | . | . | . | . | . | . | 5 | 28 | 64 | 43 | 40 | 19 | 20 | 12 | 1 | |||||||||
| Meadow Brown | 357 | . | . | . | . | . | 4 | 35 | 49 | 53 | 46 | 44 | 47 | 36 | 15 | 11 | 13 | 4 | |||||||||
| Small Heath | 591 | . | . | 31 | 30 | 45 | 131 | 103 | 127 | 39 | 23 | 7 | 8 | 3 | 4 | 6 | 11 | 13 | |||||||||