You may find it hard to believe your sweet kitty would ever catch a bird. If she did, she probably wouldn’t eat it. She’d probably just play with it and leave it on your doorstep to show off her great catch.
Cats are a danger to songbirds, and for that reason you should never allow your kitty outside with free access to birds and other wildlife. It’s also healthier for her to remain inside the house. How about feeding the birds so your cat can safely watch from indoors? Provide your cat hours of entertainment by setting up a bird feeding station outside with a comfortable indoor viewing area.