After the frost, I gathered up the sunflower seed heads to dry them so I could feed them later to the birds. After remembering a couple times to place them in the late summer sun to dry, I left them in a basket in the garage to tend to later. I finally went back to collect the seeds to store them but found instead a huge pile of shells. Instead of feeding the birds, I fed some very lucky mice who are now fat and lurking in my garage.