Squirrel-proofing a feeder hanging from a tree

“How to squirrel proof a hanging bird feeder” and “how to keep squirrels off a bird feeder on a tree” are both real, common searches, and they describe the hardest version of this problem. A branch gives a squirrel a route in from above, which is the one direction neither a pole baffle nor a weight mechanism handles well.

Here is what actually helps, in order.

1. Choose the branch, not just the feeder

Most branch-hung feeders fail because of where the branch is. What you want:

• A long, thin branch — far enough out that a squirrel cannot simply walk along it and reach down.
• Well below other branches. Duncraft's 5-7-9 rule asks for nine feet of clearance below any branch a squirrel could drop from. In a tree, that usually means hanging from the lowest branch, not a convenient middle one.
• Seven to ten feet from the trunk, fences and roofs — the horizontal jump range.
• At least five feet off the ground.

If no branch on your tree satisfies those, the tree is not the right place, and no product will change that. Full placement guide.

2. Fit a dome baffle above the feeder

On a pole the baffle goes below; on a branch it goes above, and the sizing is different. Published guidance is a baffle “at least 18 inches in diameter” with “a 2-3 foot gap between the tree limb and the top of the baffle.”

Both numbers do work. The diameter stops a reach-around from the edge; the gap stops a squirrel simply climbing down the hanging wire past the baffle. An undersized dome hung tight to the branch is the most common failed installation in this whole category.

3. Use a long hanging wire, not a short chain

The longer the drop between the branch and the baffle, the less useful the branch is as a launch point. Thin, smooth wire is better than chain — there is less for a squirrel to grip on the way down.

4. Then, and only then, buy the mechanism

If the branch cannot be defended — and plenty cannot — a weight-closing feeder is the remaining lever. It is genuinely effective against a squirrel that has to stand on the shroud, and genuinely useless against one that sits on the cap working at the hanger. That asymmetry is the whole reason placement comes first here. Why that is, in full.

What not to do to a tree

• Do not nail or screw into a living tree to mount a bracket. Use a strap or hang from a branch.
• Do not wrap the trunk in metal sheeting. It damages the bark, and the squirrel simply jumps to the branch from elsewhere.
• Do not grease the branch or the wire. It transfers to feathers, and a bird whose feathers cannot insulate is in real trouble. More on the remedies that fail.

The honest conclusion

A branch-hung feeder with a big dome baffle, hung low and well out from the trunk, works in many yards. It will never be as defensible as a pole in open ground, and if you have any ground at all, the pole is the better purchase — it costs about the same as one good feeder and it protects every feeder you own after that. Poles here.