| Month | Day and Species | Early / Median ▲ / Late for 2007-25* and 2023 ⦿ |
|---|---|---|
| January | 2nd Red Admiral | 2 Jan
1 Jan 07
24 Jan 21
|
| 2nd Peacock | 2 Jan
1 Jan 13
5 Feb 21
| |
| 11th Brimstone | 11 Jan
2 Jan 14
5 Mar 13
| |
| February | 7th Small Tortoiseshell | 7 Feb
1 Jan 13
3 Mar 11
|
| 7th Speckled Wood | 7 Feb
7 Feb 23
6 Apr 15
| |
| 13th Comma | 13 Feb
2 Jan 14
15 Mar 10
| |
| March | 19th Small White | 19 Mar
11 Feb 09
8 Apr 10
|
| 25th Large Tortoiseshell | 25 Mar
19 Feb 22
14 Jul 08
| |
| April | 3rd Large White | 3 Apr
6 Mar 25
15 Apr 08
|
| 3rd Orange-tip | 3 Apr
17 Feb 22
20 Apr 13
| |
| 7th Holly Blue | 7 Apr
10 Feb 22
23 Apr 13
| |
| 11th Green-veined White | 11 Apr
18 Feb 22
20 Apr 13
| |
| 13th Green Hairstreak | 13 Apr
30 Mar 19
3 May 13
| |
| 16th Painted Lady | 16 Apr
1 Jan 13
6 May 08
| |
| 20th Wall | 20 Apr
29 Mar 14
22 May 13
| |
| 22nd Clouded Yellow | 22 Apr
21 Mar 22
23 Jul 12
| |
| 25th Small Copper | 25 Apr
30 Mar 19
15 May 13
| |
| 29th Small Heath* UK First | 29 Apr
6 Apr 12
16 May 13
| |
| 29th Grizzled Skipper | 29 Apr
24 Mar 12
29 Apr 23
| |
| 30th Dingy Skipper | 30 Apr
6 Apr 12
6 May 13
| |
| May | 2nd Duke of Burgundy* UK First | 2 May
16 Apr 07
7 May 21
|
| 3rd Pearl-bordered Fritillary | 3 May
11 Apr 25
6 May 13
| |
| 7th Common Blue | 7 May
17 Apr 25
22 May 13
| |
| 10th Brown Argus* UK First | 10 May
21 Apr 22
29 May 13
| |
| 11th Small Blue | 11 May
26 Apr 22
22 May 13
| |
| 13th Wood White | 13 May
26 Apr 09
29 May 24
| |
| 20th Adonis Blue | 20 May
24 Apr 07
23 May 13
| |
| 28th Large Skipper | 28 May
8 May 11
14 Jun 13
| |
| 29th Meadow Brown | 29 May
8 May 25
19 Jun 13
| |
| June | 3rd Small Pearl-bordered Fritillary | 3 Jun
28 Apr 11
3 Jun 23
|
| 6th Silver-studded Blue | 6 Jun
26 May 11
19 Jun 13
| |
| 10th Marbled White | 10 Jun
2 Jun 25
30 Jun 13
| |
| 13th Black Hairstreak | 13 Jun
21 May 19
13 Jun 21
| |
| 13th Dark Green Fritillary | 13 Jun
30 May 22
21 Jun 24
| |
| 17th Purple Hairstreak | 17 Jun
15 May 11
10 Jul 13
| |
| 17th White Admiral | 17 Jun
2 Jun 11
29 Jun 13
| |
| 17th Small Skipper | 17 Jun
19 May 11
3 Jul 13
| |
| 18th Gatekeeper | 18 Jun
30 May 11
9 Jul 13
| |
| 18th Silver-washed Fritillary | 18 Jun
4 Jun 11
6 Jul 13
| |
| 19th Purple Emperor* UK First | 19 Jun
15 Jun 17
10 Jul 13
| |
| 20th Ringlet | 20 Jun
3 Jun 19
29 Jun 13
| |
| 23rd White-letter Hairstreak | 23 Jun
2 Jun 25
10 Jul 13
| |
| 23rd Essex Skipper | 23 Jun
14 Jun 11
14 Jul 13
| |
| 28th Long-tailed Blue | 28 Jun
6 Jan 19
5 Aug 24
| |
| July | 6th Silver-spotted Skipper | 6 Jul
6 Jul 23
26 Jul 13
|
| 7th Swallowtail | 7 Jul
7 May 18
22 Aug 09
| |
| 8th Chalk Hill Blue | 8 Jul
24 Jun 22
16 Jul 15
| |
| 12th Grayling | 12 Jul
9 Jul 09
26 Jul 13
| |
| 18th Brown Hairstreak | 18 Jul
2 Jul 22
5 Aug 12
|
*National first / *Ex 2020 (Covid/lockdown)
