Keep Finch Feeders Out Year Round because they're not the only birds flocking to thistle! Attract buntings redpolls, juncos and pine siskins with the tiny black seed that won't germinate (also called nyjer). Large capacity, tube, screen and spiral feeders let you easily offer thistle year-round to catch goldfinches' vibrant summer plumage. Add fresh water and nesting material in spring to encourage residency at your place. Another advantage? Pesky squirrels usually leave these feeders in peace!