Brightly-coloured ruffs stop cats killing so many birds - providing a quieter, snazzier alternative to a bell - Mirror Online
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Frontiers | Colorful Collar-Covers and Bells Reduce Wildlife Predation by Domestic Cats in a Continental European Setting
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New Collar Found to Reduce Predation in Pet Cats - Faunalytics
The Collar That Can Stop a Bird-Killing Cat - The Atlantic
How can I stop my cat hunting wildlife? | Discover Wildlife
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/4b/92/4b922ea4-3a97-42aa-874e-b4c1dc9db248/cat_collar.jpg "Save the Birds By Embarrassing Your Cat | Smart News| Smithsonian Magazine")
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Keeping Birds Safe from Outdoor Cats • The National Wildlife Federation Blog
How to Stop Cats Catching & Killing Birds - The RSPB
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Birdsbesafe Cat Collars Keep Felines From Killing Songbirds | The Animal Issue | Seven Days | Vermont's Independent Voice
How colourful collars can help reduce the number of birds killed by domestic cats | CBC News
We help birds be safe from cats
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Birds be safe: Can a novel cat collar reduce avian mortality by domestic cats (Felis catus)? - ScienceDirect
