Wild Campion has just started seeding roundabout, I was picking some seed pods the other day for the first time and it seems this plants a favourite of the lychnis moth, caterpillers feed of the seeds inside the seed pod then emerge to eat the plant itself, I was cracking the pods open over the sink and a caterpiller popped out I near sxxxt meself
I tried to find out if the caterpillers are poisonous or not but details are sketchy, usually if caterpillers are toxic they 're brightly coloured, also birds eat campion seeds, caterpillers eat campion seeds, birds eat caterpillers which ate th