A backyard battle in the United States took an unexpected turn when a newly 'squirrel-proof' bird feeder was put to the test.
'The 5-7-9 rule with feeders is a way to help avoid those pesky acrobats,' says Maria Kincaid, in-house ornithologist for smart bird feeder FeatherSnap. 'Place your feeder 5 feet off the ground, 7 ...