I've been trying to fight off squirrels since 1989, when I put my birdfeeder webcam, SeattleBirdCam.com, online. I tried ultrasound generators, slingshots, and spiking the birdseed with hot peppers - all to no avail. After studying a number of expensive "squirrel-proof" birdfeeder designs on the market, I came up with my own inexpensive patent-pending birdfeeder design which can use cable ties (tie wraps) as flexible plastic perches. These "Flexi-Perches" (tm), combined with PVC pipe of the right length and width, make an inexpensive, easy-to-build, and effective squirrel-proof birdfeeder.
Step 1: Materials
- 1/2 " PVC couplers. Quantity 4 ($0.39 each)
- 4" PVC cap. Quantity 1
- PVC glue
- 3/8" sheet metal screws. Quantity 4
- 10 gauge (about 1/10") galvanized wire at least 33" long. Quantity: 1
- 6" cable ties (tie wraps). Quantity: at least 4
- wood block approx 6" high x 6" wide x 1" thick (i.e. a 6" long piece of 1x6 board)
Note on Materials:
The cable ties are critical. When used as perches, they won't support a squirrel's weight.
For maximum anti-squirrel effectiveness, the plastic drain pipe must be at least 24" long so that the squirrel can't reach feed holes while hanging from the top of the feeder.
The pipe must also be at least 4" in diameter so that the squirrel can't cling to the feeder.
The wood block will be cut down to fit into the bottom of the pipe to act as the base plate. It fits flush into the bottom of the pipe so that there are no protrusions for a squirrel to hang on to.
Other dimensions can be changed to suit whatever materials you may have on hand.