Despite all the mild weather this winter natural food sources are now scare so it’s a good time to ensure your bird feeders are well stocked and water is available for them to drink and bathe in. Even though we’ve not had that much in the way of freezing conditions our garden birds can always do with a little extra help. See https://www.rspb.org.uk/birds-and-wildlife/advice/how-you-can-help-birds/ for more advice.
But do not be fooled - a short snap of cold weather is still possible through February & March. Keep fleece covers to hand to protect plants that can be damaged by low temperatures and cover the shoots of more tender plants that have begun to emerge.