Black-Oil Sunflower Seed Basics

"Much smaller than traditional gray-striped sunflower, black-oil sunflower has a thin, papery shell that yields to the smaller bills of sparrows, juncos and even goldfinches. It's a much better value, because 70% of each seed is meat, compared to 57% for striped sunflower seed. Black-oil sunflower is the heart of any feeding program, for it is accepted by the greatest variety of birds."
--- From the Bird Watcher's Digest Booklet Enjoying Bird Feeding More.

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