Your newly dug wildlife pond should be filling with all this rainwater now. That is better than filling it from the tap. We recommend a minimum depth of 60cm (2ft) at the deepest point to reduce the risk of the pond freezing to its full depth with shelves at 15cm and 30cm (6″ and 12″). This gives various depths for different plant types that will create a selection of habitats for amphibians and other creatures that will use your pond for breeding and shelter.
It is too early yet to expect any wildlife to be on the move as they will only begin to awake from dormancy when the night temperatures improve. So now is the time to make sure their world is ready for when they return. In an established pond clear any remaining rotting debris from the water.
If you had a covering of duckweed last year that gets trapped in a layer of ice in the next month then lift the ice in large pieces and you will find the duckweed is then removed from the pond too. Throw the ice onto the compost heap far away from the pond and you will have started the control of that Native surface pond plant that will blanket the entire pond in the Spring, if left to its own devices.