What type of seed do birds like best?

We created four different types of seeded peanut butter pine cones to find what type of seed the birds prefer.

Most science fair projects are discovery based and follow the scientific method. Instead of creating a scientific model to explain a concept, science fair projects answer a question through experimentation. Therefore, this project is perfect for science fairs. It is simple, interesting and discovery based.

 After gathering pine cones, my son generously slathered them with peanut butter.

Then they were rolled in sunflower seeds, sesame seeds, flax seeds and millet seeds. The birds in our area preferred the sunflower seeds. What type of seed do your neighborhood birds prefer?