The Crays

Anyone know if signal crayfish - those voracious North American invaders that are depleting stocks of our native species - lurk in our local streams and rivers?

With a licence, it's apparently OK to set nets to capture the creatures, which yield lobster-like meat once they are humanely dispatched.

The posh television chef Valentine Warner - whose plummy style I find irritating - gathered and cooked a batch in his show last night and they looked very good.

Wonder if these beasts lurk in the waterways of this area?