martinswarren.bsky.social

@martinswarren.bsky.social

Butterfly and moth enthusiast, working to conserve these lovely insects in Europe and beyond. Advisor to Butterfly Conservation Europe and author of ‘Butterflies’ published by Bloomsbury.

✨ A very successful morning searching for marsh fritillary larval webs! ✨ We spent the morning surveying Lyscombe nature reserve for the larval webs of this rare and threatened butterfly. 🦋 And we were absolutely thrilled with what we found…

BildBild

After a good 1st generation the Speckled Wood (bont zandoogje, P aegeria) suffers from the drought on Dutch Butterfly Monitoring transects. Numbers this summer are much lower. Still it remains a common and widespread butterfly who will recover once conditions become favourable.

Bild

Further good news after Dark Bordered Beauty was rediscovered in Northumberland. This morning I confirmed a new site for the species in Scotland. Last year I was surprised to find a single male in one of my traps, but we thought it could be a wanderer. Last night, I found 2 more males! #TeamMoth

A potted male Dark Bordered Beauty mothA male Dark Bordered Beauty moth sits amongst the heatherA moth trap surrounded by heather

Today is the start of week 21. The deadline for submitting all your data for the UKBMS is the end of October - so get ahead and enter all your data to date. This gives our team of volunteer Coordinators and species experts time to check, validate and verify your records.

Bild

When people say ''I have lots of butterflies in my garden'', it's useful to get a quantitative estimate, in a standardized way. Example: At friends' garden (Alps near Granoble) I counted >50 individuals, 8 spp in a 15 minute count. Try the ButterflyCount app, you can now register sites too!

BildBildBildBild

I was shown some very small small tortoiseshells by the qualified entomologist owner of a tropical butterfly house. They'd got in as caterpillars before the heating was turned on and he said heat speeds up development in pupae so they came out small. They were about the size of a small copper.