Bird feeders

I just saw an appeal to people on instagram. It said that many small birds are dying because they catch diseases from other birds when they feed from a bird feeder. Even if one has been sterilised it only takes one pigeon to feed from it and other birds will be infected.The bird currently being affected is the Chaffinch. He said that, rather than using bird feeders we must all make our gardens more bird friendly. Also that the food we feed them eg peanuts use many air miles to reach the shops. Having said that I don’t ever remember seeing pigeons on my bird feeders…they’re usually on the ground. I get Jackdaws etc on it but not pigeons.