Combine gelatin powder with 3 tablespoons of room temperature water and mix well.
Add 1/2 cup boiling water to the gelatin mix and whisk until smooth.
Add the gelatin mixture to the birdseed and mix well.
Spray the cups in the muffin tin with non-stick vegetable spray.
Spoon in birdseed mixture evenly among all muffin sections.
Lightly press the birdseed mixture into place.
Cut up straws and place a section into the center of each birdseed muffin.
Let sit for about an hour.
Lift out the birdseed cakes and check to see that the straw is the whole way through.
Remove straws.
Thread cakes onto a length of twine and hang them outside.
Keep the remaining birdseed cakes in an airtight container in the refrigerator or freezer.