in bad weather i do get a lot of ground feeders such as the doves and juncos and towhees and some others and i purposely go to the farm supply or ranch and feed store and get a 50lb bag of chicken feed for around 8.50 a bag.
It is a mix of grains most often milo and cracked corn and wheat. i put out a cup or two on the sheet or on the ground for the hungry birds. some people call them trash birds but i enjoy any one that wants to come and eat.