We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
I have both the Whipper and the Dipper. The Whipper is the birds' favorite because of the branch-like perch. The Dipper empties at less than half the rate of the Whipper and many birds don't seem to feel secure standing on the landing. The squirrels finally gave up on them, though they gave it a valiant effort. I don't think any squirrel stayed on the Whipper more than two revolutions before they became flying squirrels. I suspended the feeders on a thin cable strung beween two large oaks about ten feet off the ground, so the little acrobats had to do a high-wire act before assaulting the feeders. The battery charge on the Whipper lasts for months & isn't hard to recharge. You'll enjoy not having to fill the feeder too often, but you might want to go ahead and get a couple of 50 pound bags of sunflower seeds.
I put safflower seed in my feeder, the squirrels won't touch it but the titmice, sparrows and chickadees like it. I also put out a thistle feeder for the goldfinch as well as suet feeders for the woodpeckers. I throw cracked corn out for the squirrels and towhees as well as whoever else comes along.
My son did a 6th-grade science fair project comparing various squirrel-proof bird feeders and videotaping them every morning in February 1995. Great video of many squirrels biting the dust - er, snow. He overdubbed "In The Halls of the Mountain King" and "The Ride of the Valkyries" behind it.
He concluded that the squirrels eventually defeat everything by sheer persistence, but making it difficult for them at least keeps the population down. I've heard that gray squirrels can live for 6 years, but we find that after a year off, you can reuse a squirrel-proof feeder and they seem to start from scratch.
BTW, he liked it so much he went on to become a videographer for a living.
Assistant Village Idiot