Provide fresh water
When puddles and ponds have frozen over, it can be difficult for wildlife to find fresh drinking water. Providing a bowl of clean, unfrozen water can be an invaluable lifeline for a variety of species; be sure to check that your bird baths haven’t frozen over, and refresh water bowls regularly if you can.
Consuming and retaining energy is vitally important for wildlife right now, so try to reduce disturbance in areas where animals may be foraging.
For example, steer clear of badger setts in woodland areas, and avoid flocks of gulls and waders if you’re out enjoying the coastline. Running/flying away from humans uses up an awful lot of energy that could be used to keep warm.
Feed the birds
Keeping warm in low temperatures requires a lot of energy, so making high fat foods easily available for garden birds is a great way to help them. Fat balls and peanuts are particularly good during cold snaps as they are high in fat which helps birds keep warm.
If you’re feeling crafty you could even make your own bird feeders! Simply melt suet into moulds (coconut shells or logs with holes drilled in make excellent containers) then, once they have cooled and solidified, leave them somewhere high up in your garden for the birds to find.