They offer a constant supply of fresh seed to your birds and are more sanitary than using cups or plates as your birds can't walk or poop in their food. They also better contain the mess of seed hulls.
And they will cut your seed use by at least 50%, maybe closer to 75%. They will make a huge difference in the cost of feeding your birds.
Don't force seed hoppers on your birds cold turkey. My birds wouldn't go near them for about a week (finches are afraid of everything

Another tip: Prime the seed hoppers by placing seed on the near side of the dam so your birds don't have to reach in as far for seed when they first start to explore them. Any finch can learn to use seed hoppers and they are better for your birds and your pocket book!
Bill
