3 Comments
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Mark's avatar

Thank you Dennis!😊

Hilary May's avatar

Fascinating as always. I’ve only ever had the odd Least Black Arches and then had 10 in one night in mid April this year which was a surprise.

Dennis Chanter's avatar

Yes I had a similar experience a few years ago with the Green Oak Tortrix ... usually just see a few but one night I had over 60 and a few days later nearly 80!