Thanks Bill, I had a read of that whole thread (panic levels rose a bit though!) but I know what to look out for in case it's the same situation. Haven't seen any of the "green spots of doom" as it were though. I haven't seen him doing the mouth thing at all today or make the clicking noise. He was awake when I woke up this morning so offered a cricket, which he took. That little jerk store does like to make me worry. I'll keep this thread updated if anything new changes, although I'm not sure what it was (or is).

Since he is still small, and the weather's getting warmer (only just... here in England it has been the coldest March in 100 years apparently, but we are starting to go back to the seasonal temperatures again), I don't know if the clicking noise is him trying to croak perhaps? I've never raised up White's before, so just a thought really.