If you don’t use a heater for your birdbaths to keep water from freezing, remove the concrete birdbath tops to prevent freezing and thawing which results in cement cracking.
Make sure there is an opening in the ice in your pond. A pond de-icer will keep an opening so gases can escape and your fish will stay healthy.
If the animal repellents you have been using aren’t working anymore, try switching products. Animals can become accustomed to one scent, and the products lose their effectiveness.