It's the same here. We have several peanut feeders and during the summer just one seed feeder. However at the moment it's mainly sparrows (house and tree) who are gorging on the seeds, rather than the smaller birds who struggle to get a look-in. In previous years the sparrow numbers have seemed to dwindle (and the sparrow hawks get fatter

) and the tits, greenfinches and the rest of the winter usual suspects can get to the seed feeders (we put out several then).
We have found that feeding straight hen grain on the ground will feed the sparrows, chaffinches, yellow hammers, collared doves and so on in the winter. If possible we try to feed them away from the hens because of course wild birds can bring some parasites and sickness to domestic hens. The grain isn't particularly cheap, but it is cheaper than good quality bird seed. Sparrows, chaffinches etc are grain eaters and they have plenty to forage for here anyway, so I get annoyed when they scatter so much of the expensive seed everywhere, in search of the larger grains which they prefer.
So see which birds you have and save the expensive seed for the little, well mannered ones