Warm weather brings early butterflies

Small blue butterfly with black edges to the blue and white fringes
Silver-studded Blue. Photo: Tracy Whincup

Receiving a photo of a Silver-studded Blue, on the wing at the earliest date for the ten years this website has been recording, led us to look at other emergence dates. We have had 33 species recorded so far, and at least 21 of those are earlier than last year. To give a few examples or our less common butterflies, the figure given being the number of days it is early compared to 2024.

Small Blue 10
Wood White 11
Marsh Fritillary 14
Common Blue 15
Adonis Blue 17
Lulworth Skipper 17
Wall Brown 18
Silver-studded Blue 19
Grizzled Skipper 20
Small Heath 25
Meadow Brown 25
Small Copper 27
Dingy Skipper 28

It must be borne in mind that 2024 was a bad butterfly year, but generally speaking, this year’s first sightings seem better than those of 2023 as well. We need to hope that the various species have managed to synchronise with the growth of the plants on which their caterpillars need to feed.

If you want to see first sighting dates for the last ten years, go to our First Sightings page in our web sightings archive (accessed via the Record tab) and if you haven’t yet browsed our Gallery page, you are missing a real treat

4 thoughts on “Warm weather brings early butterflies

  1. Pingback: Why the UK’s butterflies are booming in 2025 – We See & Show

  2. Pingback: Why the UK’s butterflies are booming in 2025 - The Conversation - The Journalist Cabal

  3. Pingback: Why the UK's butterflies are booming in 2025 - America Latina News

  4. Pingback: Why the UK’s butterflies are booming in 2025 - July 2025

Leave a Reply