Pennington Select Thistle Seed. The bird food people. Finch favorite. Attracts more finches and colorful songbirds. * Pine Siskins. Goldfinches. Purple finches. Attract these favorites plus chickadees, mourning doves & tufted titmice. Great entertainment for your yard. Net Wt. 5 lbs. (2.27kg). About Pennington bird seed: Pennington bird seed has been specially formulated to attract different types of birds based on scientific experimentation. Today, the birds' choice of seed, their dietary requirements and the nutritional value of each ingredient are used to establish a balanced blend.