On the edge of a large nettle bed close to Engine Wood I watched a male small tortoiseshell butterfly establish a courtship territory. It was basking in the morning sunshine and suddenly taking flight high into the sky to investigate every passing small tortoiseshell butterfly.  Other males were chased away before eventually, a female was attracted back to the nettle bed where I managed to take the image below. It appears mating takes place well inside the nettle bed and afterwards the female goes off in search of suitable nettles to lay her eggs.  Sadly, nettles are often cleared away as part of clean ups in the garden and countryside.  My encounter shows how valuable nettles are to wildlife.  Indeed, they are vital food plants for the caterpillars of small tortoiseshell, peacock, comma and red admiral butterflies. The other image is of a roosting male orange tip butterfly that I found earlier in the morning
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small tortoiseshell mating

orange tip male roosting