It's a full time job keeping the birds fed at this time of the year up here in Scotland. Robins, blue tits, starlings, pigeons, jackdaws, sparrows & blackbirds all appreciate seeds, unsalted peanuts, fat balls, seeded bread, corn, mince. The blackbirds adore raisins. They sit on the frozen bird bath in the morning waiting for us to replenish the water.
This year they are very keen to bathe which surprised us given how chilly & snow-covered everything is at present.
I expect their plumage needs particular attention in order to help with insulation.