
| 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 | 161 | . | . | . | . | . | . | 1 | 47 | 14 | 37 | 45 | 13 | 3 | 1 | . | . | . | |||||||||
| Essex Skipper | 4 | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | |||||||||
| Large Skipper | 75 | . | . | . | 1 | 15 | 32 | 17 | 6 | . | 2 | 1 | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | 44 | . | 19 | 11 | 2 | 11 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 4 | . | . | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 72 | . | . | . | . | 2 | . | 6 | . | 1 | . | 6 | 12 | 17 | 17 | 1 | . | 1 | |||||||||
| Large White | 69 | . | . | 1 | . | 2 | 5 | . | . | 2 | 3 | 8 | 16 | 13 | 8 | 4 | 1 | . | |||||||||
| Small White | 99 | . | . | 5 | . | 3 | 1 | . | 2 | . | 4 | 4 | 25 | 16 | 10 | 12 | 4 | . | |||||||||
| Green-veined White | 45 | . | . | 2 | . | . | . | . | . | . | 4 | 13 | 9 | 4 | 7 | 1 | . | 1 | |||||||||
| Orange Tip | 10 | . | 6 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 7 | . | 4 | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | |||||||||
| Small Blue | 28 | . | 7 | 9 | 7 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 3 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||||||
| Common Blue | 78 | . | 2 | 3 | 16 | 7 | 9 | 1 | . | . | . | 3 | 5 | 8 | 4 | 3 | 9 | . | |||||||||
| Chalk-hill Blue | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Adonis Blue | 127 | . | 3 | 5 | . | 2 | 11 | 2 | . | . | . | . | . | . | 6 | 47 | 15 | 2 | |||||||||
| Duke of Burgundy Fritillary | 3 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 78 | . | . | . | . | . | . | 1 | 8 | 8 | 13 | 9 | 4 | 18 | 6 | 5 | . | . | |||||||||
| Painted Lady | 3 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Small Tortoiseshell | 64 | . | . | . | . | . | . | . | 1 | 4 | 2 | . | . | . | 2 | 30 | 4 | 2 | |||||||||
| Peacock | 144 | . | 3 | 3 | . | . | . | . | . | . | 1 | 36 | 21 | 39 | 24 | . | 3 | . | |||||||||
| Comma | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | |||||||||
| Dark Green Fritillary | 98 | . | . | . | . | . | . | 12 | 36 | 11 | 15 | 11 | 8 | 5 | . | . | . | . | |||||||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Marsh Fritillary | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 71 | 1 | . | 9 | 4 | 2 | 3 | 2 | . | . | . | . | 4 | 5 | 12 | . | 13 | 2 | |||||||||
| Wall Brown | 36 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 24 | . | . | |||||||||
| Marbled White | 111 | . | . | . | . | . | . | 8 | 33 | 17 | 30 | 18 | 5 | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 297 | . | . | . | . | . | . | . | 1 | 26 | 41 | 67 | 52 | 75 | 22 | 1 | . | . | |||||||||
| Meadow Brown | 250 | . | . | . | . | 2 | 22 | 10 | 10 | 6 | 13 | 29 | 32 | 32 | 38 | 23 | 1 | 1 | |||||||||
| Small Heath | 74 | . | 3 | 1 | . | 18 | 10 | 12 | 3 | 2 | 9 | 3 | 3 | 2 | 4 | 1 | 1 | . | |||||||||
| Ringlet | 348 | . | . | . | . | . | . | 66 | 130 | 69 | 58 | 21 | 2 | 2 | . | . | . | . | |||||||||