Rainbow pattern serves as early-warning system for birds, giving them a chance to escape a cat’s lethal pounce.
Colourful collar covers can provide an early warning system for birds against stealthy free-roaming house cats, which are being blamed for killing millions of birds each year in Canada.
Otter said birds have four colour-sensing receptors in their eyes detecting ultraviolet as well as reds, blues and greens — more than humans and other mammals — so the flash of colours gives birds an opportunity to react. South of the border, the American Bird Conservancy estimates outdoor cats kill 1.4 billion birds a year.
Nightingale said cats face significant dangers themselves when roaming free, including predation by wild animals such as cougars and coyotes and being run over by vehicles.”Interestingly, cats are the only pets that we would consider sending out on their own … we don’t do that with dogs,” said Nightingale.
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