We have a lot of hanging feeders plus a window feeder. The birds loved the old window one and we had all sorts in it, even woodpeckers. Unfortunately, it eventually died so we got a new one, quite different to the old one, and it's taken months for the birds to get used to it. We get all manner of birds in the garden, from blue tits & great tits to greater spotted woodpeckers, siskins, greenfinch, goldfinches, nuthatch, dunnock, Robins, blackbirds etc . We also have ravens, jays, magpies and pheasants. In addition to fat balls & peanuts, we only ever feed sunflower seeds, I found everything else was getting wasted. Every kind of bird seems to love them.