Fun fact: at Monks Wood the Black Hairstreaks coincide with the dispersal & settling period of newly-independent juvenile Marsh Tits, now very obvious & noisy, and also the full body moult of the parents, which get very secretive, quiet and hard to find (maybe embarrassed by their plumage state!).
Richard K Broughton
Had a lovely walk around Monks Wood NNR this afternoon. Very peaceful & we got to see Black Hairstreak & White Admiral #butterflies 😀 @bc-cambs-essex.bsky.social