The sock hung for three weeks and it was almost invisible that the seeds had been eaten. I suspected that it was too strong and difficult for birds to get to the seeds. I stuff our other two socks three times a week. I bought a Finch Feeder with a pre-filled Pennington sock from Wal-Mart. I just keep filling them in. We often have over 10 birds per sock and more waiting in the trees. They just ignore the Audubon sock.
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