
| 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 | 313 | . | . | . | . | . | . | . | . | . | 10 | 15 | 48 | 45 | 46 | 23 | . | . | . | . | |||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | 3 | 42 | 34 | 33 | 14 | . | . | . | . | |||||||
| Large Skipper | 93 | . | . | . | . | . | . | 1 | 3 | 23 | 23 | 18 | 3 | 3 | . | . | . | . | . | . | |||||||
| Dingy Skipper | 99 | . | . | . | 10 | 13 | 55 | 3 | 6 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 16 | . | . | . | 4 | 2 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 26 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | 11 | 3 | 4 | 2 | . | |||||||
| Brimstone | 115 | 7 | 8 | 4 | 7 | 20 | 12 | 3 | 5 | . | . | 2 | . | 6 | 3 | 5 | 2 | 3 | 1 | 1 | |||||||
| Large White | 85 | . | . | . | 1 | 2 | . | 1 | 1 | 3 | . | . | 4 | 9 | 10 | 25 | 5 | 16 | . | . | |||||||
| Small White | 127 | . | . | . | 1 | 7 | 11 | 2 | 2 | 3 | 3 | . | . | 3 | 14 | 30 | 12 | 16 | 1 | 1 | |||||||
| Green-veined White | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||
| Orange Tip | 6 | . | . | . | . | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 48 | . | 1 | 4 | 15 | 3 | 7 | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 139 | . | . | . | 10 | 4 | 3 | 1 | . | . | . | 1 | 6 | 5 | 39 | 45 | 6 | 7 | 1 | . | |||||||
| Small Blue | 9 | . | . | . | . | . | 1 | 2 | 2 | 3 | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Brown Argus | 478 | . | . | . | . | 20 | 83 | 20 | 19 | 2 | . | . | 16 | 19 | 173 | 49 | 21 | 19 | 22 | . | |||||||
| Common Blue | 2087 | . | . | . | . | 4 | 8 | 72 | 112 | 84 | 35 | 16 | 15 | 30 | 400 | 705 | 275 | 175 | 58 | 3 | |||||||
| Chalk-hill Blue | 99 | . | . | . | . | . | . | . | . | . | . | . | 1 | 34 | 15 | 21 | 14 | 12 | 1 | . | |||||||
| Adonis Blue | 19 | . | . | . | . | . | . | 4 | . | 1 | . | . | . | . | . | . | 1 | 2 | 6 | . | |||||||
| Red Admiral | 20 | . | . | . | . | . | . | 1 | 1 | 2 | . | . | . | 3 | 6 | 3 | 1 | 2 | 1 | . | |||||||
| Painted Lady | 108 | . | . | . | . | . | 8 | 2 | 8 | . | . | . | 5 | 33 | 6 | 13 | 3 | 14 | 2 | . | |||||||
| Small Tortoiseshell | 288 | 38 | 15 | 11 | 7 | 5 | 1 | . | . | 3 | 7 | 65 | 30 | 19 | 2 | 3 | 3 | 15 | 6 | 1 | |||||||
| Peacock | 79 | 10 | 10 | 6 | 1 | . | . | . | . | 3 | 1 | . | . | 10 | 4 | 7 | 3 | 7 | . | . | |||||||
| Dark Green Fritillary | 13 | . | . | . | . | . | . | . | . | . | . | 3 | 5 | 5 | . | . | . | . | . | . | |||||||
| Marsh Fritillary | 6 | . | . | . | . | . | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| Marbled White | 734 | . | . | . | . | . | . | . | . | 5 | 200 | 187 | 154 | 125 | 14 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 236 | . | . | . | . | . | . | . | . | . | . | 5 | 39 | 75 | 72 | 45 | . | . | . | . | |||||||
| Meadow Brown | 1724 | . | . | . | . | . | . | . | . | 83 | 105 | 420 | 526 | 162 | 236 | 94 | 6 | 7 | . | . | |||||||
| Small Heath | 1531 | . | . | . | . | 14 | 34 | 58 | 81 | 113 | 75 | 57 | 21 | 30 | 11 | 101 | 455 | 275 | 59 | 22 | |||||||
| Ringlet | 9 | . | . | . | . | . | . | . | . | . | . | . | . | 9 | . | . | . | . | . | . | |||||||