Pennington Seed Bird Basics Wild Bird Feed is the best food for these birds: Rose-Breasted Grosbeaks, Mourning Doves, Song Sparrows, White Breasted Nuthatchs, Tufted Titmouses, Pine Siskins, Rufus-Sided Towhees, Purple Finches, American Tree Sparrows, White-throated Sparrows, Bluejays, Goldfinches, Cardinals, Chickadees, House Finches and Evening Grosbeaks. You should check with your local park to find out if you are able to feed them and what they would allow. Every area has different restrictions as their diet in the wild is usually best with no outside food. You are right, it is not recommended to feed them breads.