I have been feeding birds in my garden for quite a few years and I must say this year I have got so many birds I don't know what to do with them, I think I must have yours. They are great and blue tits also occasionally coal tits, robins, 3 at the moment, chaffinch and as I now feed niger seeds I am getting goldfinches, they are at various stages of growth.Sparrow and dunnocks in abundance, they love fat balls. I stopped feeding seed as you said they sort out what they want and drop the rest, so now its peanuts, black sunflower seeds,fat balls and niger seed, and any good scraps, pidgeon and moorehen pick up anything remaining on the floor. As you can see I have such a busy life watching my birds.