Goldfinch, House Finch and Purple Finch are wild about Niger thistle seed. This is not the noxious weed so many of us are familiar with. You do not need to worry about Thistles coming up in your yard from the seed that falls on the ground. The Niger seed comes from Ethiopia, is rich in oils that provide much needed energy to the wild birds in all types of weather. The seed is very small and works best in Thistle Feeders with small openings or a small amount can be placed on tray feeders. 5 lb. Bag.