Ive got bird feeders out all year round.A peanut feeder and a seed feeder,I also hang out suet balls for them.Poor things must be really suffering,especially here in Glasgow we still have bloody 9 day old snow lying frozen solid,then another 4 inches fell yesterday.It's not to rise above freezing today.All sorts of birds Sparrows,Starlings,chaffinches,robins,coal tits,blue tits,great tits,long tailed tits,blackbirds,dunnocks,green finches,wood pigeons,feral pigeons,collared doves.Magpies,carrion crows,black headed gulls,herring gulls,lesser black backed gulls.seen few wrens skulking about too.
Save your old fat etc from the grill put into a plate and put out for them once solid.I also buy a block of lard ,it's dead cheap,melt it into a bowl,let it harden again and put that out.
I was a bit of a bird nut when younger,I used to buy bird magazines,so still have an interest in them evn now.