Last week I met a friend for a walk at Parc Penallta, one of the many colliery spoil sites that have become public parks and that are hot spots for biodiversity. And, as we explored, I was surprised and delighted to find this Emerald damselfly (Lestes sponsa), one I don’t see in my local area. As well as its distinctive colour, this damselfly can be identified by the way it holds its wings at a 45-degree angle to its body when perched.