Hello Chuff.Are you sure it wasn't an Australian website? ;D Frogs and toads are in semi hibernation at present and do not eat or move about at all.Mine are sitting soulfully at the bottom of their pond and my deepest fish pond.However,come the warmer weather they reappear in pairs which always makes me laugh!Then they get onto the business in hand ;D
The best time to build a pond is early spring when the ground is damp and there is plenty of rain to fill the pond,and the plants are getting going.