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"Protect your birdfeeder from sparrows WITHOUT discouraging other desirable birds! University developed 98% effective in studies Any feeder: hanging, tube, stationary or hopper Sparrow-Free Magic Halo is a patented wire hoop device with vertical extension wires that attaches easily to the top of a feeder. Studies have shown that certain bird species, including house sparrows, will not fly under these wires. Developed after decades of research into risk aversion and foraging habits of birds by Dr. R.J. Johnson professor of Wildlife Biology and Extension Wildlife Specialist in the School of Natural Resources at the University of Nebraska, Lincoln. Improve your feeding program.With messy, invasive house sparrows, blue jays and common grackles out of the way, desirable birds have better access less competition more food more time for predator scanning More beautiful songbirds at your feeder, and no wasted birdseed. Weight: 2 pounds Circumference (assembled) 30” of zinc plated, powder-coated steel
Sparrow-Free Magic Halo is a patented wire hoop device with vertical extension wires that attaches easily to the top of a feeder. Studies have shown that certain bird species, including house sparrows, will not fly under these wires. Developed after decades of research into risk aversion and foraging habits of birds by Dr. R.J. Johnson professor of Wildlife Biology and Extension Wildlife Specialist in the School of Natural Resources at the University of Nebraska, Lincoln. Improve your feeding program.
With messy, invasive house sparrows, blue jays and common grackles out of the way, desirable birds have
More beautiful songbirds at your feeder, and no wasted birdseed. Weight: 2 pounds Circumference (assembled) 30” of zinc plated, powder-coated steel
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