We used to feed them loads. Can't even start to remember all of the varieties of birds we had, but we also had no neighbours and have a nature reserve and farmland all around us. Costed a fortune and people always used to ask why we had 3 blue large bins in the hallway. They were the peanuts, wild bird seed, and hulled sunflower seeds for feeding the birds. buying them in bulk 25kg bags saved a lot of money. We would also make up our own fat balls as well, usually from the cheapest fat we could buy and mix in the 3 ingredients above and stuff into 2 coconuts suspended a long way from what squirrels could reach. We would have some rarer breeds visit us including tree creepers, yellow hammers, lapwings, reed buntings, willow tits, bull finches, gold finches, bramlings and many many others which I used to have a photo of each and every one named on the wall for visitors to see. We also did a good job in feeding the local bord of prey population including sparrow hawks, buzzards and once even a hobby.
Now, we don't have a garden so just listen to them...