One thing we know for sure....Cardinals, Rose-breasted Grosbeaks and House Finches LOVE Safflower Seed! One other thing about this seed....typically, most blackbirds and squirrels do not! When "blackbirds" are hanging around the garden, many of our customers switch to safflower seed. While you won't probably get the variety of birds and while it may take a bit for others to get to like it, it may be a choice you'd like to try! Hope you're having a great week in your gardens!!