To help birds through the cold winter period they need to know where they can find a regular supply of nourishing food and clean water.
A seed mix is ideal for many birds. It is essential that the seeds are kept dry and I suggest you look for a feeder with a roof to keep the rain off. Water will make the seeds go soggy and turn mouldy. Fruit such as apples can be hung from a wire where the birds can feed in safety and also keep the fruit out of reach of rats.
Fat balls are also very nutritious and are a favourite for tits and robins.
To attract birds to your garden you need to start putting out food in November before the frosts arrive in order that the birds can learn where they can find food and that it’s safe to feed.
Putting out food will also attract rats and squirrels. You need to choose feeders that are rat and squirrel proof. Wire bird feeders are good.