Slowly, slowly, as the number of mild sunny spring days increases more and more butterflies are beginning to emerge. This beauty is a Holly blue (Celastrina argiolus), the first of our blue British butterflies to appear each year.

10 Friday Apr 2026
Slowly, slowly, as the number of mild sunny spring days increases more and more butterflies are beginning to emerge. This beauty is a Holly blue (Celastrina argiolus), the first of our blue British butterflies to appear each year.

09 Wednesday Apr 2025
Posted in insects
Two for the price of one today!
It’s always a joy to see the blue butterflies emerge; it’s like a tiny piece of the sky has fallen to earth and is flitting amongst the flowers and shrubs and along the trees and hedges. The first to appear locally are the Holly blues. My first, on 2 April, was in an unlikely place; as I walked past, it flitted out from the street-side hedge of a house a few streets away from where I live. There was no Holly or Ivy in sight but perhaps those larval plants were growing in a nearby back garden that I couldn’t see in to.

Next to appear, just a couple of days later, was a Small white that was already looking a bit tatty. It seems its short life was proving to be a challenge, escaping from bird attacks or, perhaps, getting snagged in vegetation. My second Small white was pristine, feeding along a field edge so abundant with Blackthorn blossom that the area had attracted six species of butterfly: as well as the Small white, there were Speckled wood, Comma, another Holly blue, Brimstone, and my first Orange-tip of 2025 (which will feature in a future blog, as soon as one stays still long enough for a photo).

08 Thursday Aug 2024
Posted in insects
Tags
British butterflies, Brown argus, Comma, Common blue, Holly blue, Peacock, second brood butterflies, Small copper
After seeing very low numbers of the first broods of butterflies earlier in the year, I’m hoping that the second broods that are now hatching will have better luck with the weather and be able to breed successfully so that population numbers recover in 2025. These are some of the beautiful butterflies I’ve seen that have recently emerged.

Brown argus

Common blue

Holly blue

Small copper
15 Monday Apr 2024
No, I haven’t been on a whirlwind trip to Scandinavia, more’s the pity. I’ve just read that the Holly blue (Celastrina argiolus) is not only native to Britain but can also be found throughout the Palearctic, and is the national butterfly of Finland. Well done the Finns for recognising the beauty of this gorgeous creature. And well done this particular Holly blue for sitting still for a few minutes yesterday so I could grab a few quick photos.

29 Saturday Apr 2023
Posted in insects
I saw my first Holly blue of the year on 15 April but it took 10 more days to find one, this stunning female, sitting still long enough to take a reasonable photo.

15 Thursday Sep 2022
Posted in insects
Well, this was a surprise sighting during today’s walk! Holly blue butterflies have two broods each year (very occasionally three in the right conditions) but even with a second brood, the adults have usually disappeared by the beginning of September. This female did look quite faded and a bit bird-pecked but she was still flying strongly. Butterflies continuously amaze me!

26 Friday Aug 2022
Posted in insects
07 Tuesday Jun 2022
Remember A Holly blue and her egg, my post on 24 May? Well, the egg has now hatched and I’ve had my first glimpses of the larva, so incredibly tiny that, with my poor eyesight, I had to take some macro photographs and look at those to be sure of what I was seeing – spot the hairy larva in the photo on the right below.

These images were taken one day apart, so the larva can have been no more than 24 hours old at this stage. In his essential publication Life Cycles of British & Irish Butterflies, author Peter Eeles writes: ‘The larva starts to feed by burying its head deep into the bud on which the egg was laid’. This is the first of four stages the larva goes through before it pupates, so I’ll be checking back regularly to try to monitor its progress.
24 Tuesday May 2022
Posted in insects
This Holly blue butterfly was egg-laying as I watched so I was able to get photos of one of her amazing eggs, in this case laid on the flower buds of Dogwood.


28 Monday Mar 2022
I’ve skipped a few butterfly firsts but all the species I see will get their turn over time. Today, I am simply too excited at seeing my first Holly blue of the year to choose anything else, as there’s just something extraordinary about a butterfly this colour.

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