Niger seed (nyjer seed or thistle seed) is known to be a favourite of finches, due to the shape and structure their beaks, which are suitable for a smaller type of bird seed.
“You can never be quite sure what will happen if you add a new food or new feeder. Birds have to find it, like that food and so on. But it went well for us - after a few days we have a flock of goldfinches visiting.”
