
| 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 | NI | . | . | . | . | . | . | . | . | 1 | 17 | 44 | 48 | 17 | . | . | . | . | . | ||||||||
| Large Skipper | NI | . | . | . | . | . | . | . | 3 | 11 | 15 | 12 | 7 | 2 | . | 1 | . | . | . | ||||||||
| Dingy Skipper | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | NI | 18 | 1 | 9 | 16 | 8 | . | 8 | 3 | . | . | 5 | 5 | 5 | 6 | 10 | 10 | 5 | . | ||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | 5 | 2 | 1 | . | . | . | ||||||||
| Small White | 53 | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 11 | 3 | 2 | 13 | 6 | 3 | ||||||||
| Green-veined White | NI | 1 | . | 1 | 2 | 3 | . | . | . | . | . | 1 | . | 3 | . | . | . | . | . | ||||||||
| Orange Tip | NI | 2 | 3 | 2 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | ||||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | 9 | 5 | 2 | 2 | . | . | ||||||||
| Holly Blue | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| White Admiral | NI | . | . | . | . | . | . | . | . | 2 | 4 | 5 | 3 | . | . | . | . | . | . | ||||||||
| Red Admiral | 20 | . | . | . | . | . | . | . | . | 4 | 3 | 2 | . | . | . | 1 | . | 2 | 3 | ||||||||
| Painted Lady | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | ||||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | ||||||||
| Peacock | NI | 1 | 1 | 1 | 1 | . | . | . | . | . | . | . | 1 | 4 | 8 | . | . | 1 | . | ||||||||
| Comma | 71 | . | . | . | . | . | 1 | . | . | . | 6 | 3 | 2 | . | . | 1 | 1 | 20 | 23 | ||||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | 5 | . | 6 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Pearl-bordered Fritillary | NI | 18 | . | 6 | 13 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | 22 | 25 | 30 | 65 | 23 | 10 | 3 | . | 3 | 1 | ||||||||
| Speckled Wood | NI | 15 | 4 | 7 | 7 | 6 | 17 | 10 | 3 | 8 | 6 | . | 3 | 8 | 6 | 4 | 10 | 15 | 9 | ||||||||
| Marbled White | NI | . | . | . | . | . | . | . | . | 11 | 11 | 13 | 5 | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | 8 | . | 64 | 115 | 80 | 43 | 3 | 1 | . | . | ||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 2 | 40 | 39 | 46 | 92 | 85 | 11 | 6 | 4 | . | . | ||||||||
| Small Heath | NI | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | 1 | 1 | ||||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | 69 | 135 | 144 | 47 | 12 | . | . | . | . | . | ||||||||
| The Cinnabar | NI | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||