Slightly more common Eggar

Not quite as rare as the beast Marc was looking for, but this morning, while searching some hedgerows at Bernwood Meadows, Bucks that we didn't get around to on our Brown Hairstreak egg search a couple of weeks ago, I found this early instar Oak Eggar caterpillar over-wintering on a blackthorn stem. It was only 1.5cm in length.
Dave Wilton 

Oak Eggar caterpillar, Bernwood Meadows 11th March