Cats hunt naturally and cats who are outdoors usually hunt birds
whether the cat is well-fed or not. Please go the the American Bird
Conservancy website for the best information on this issue https://abcbirds.org/program/cats-indoors/

Here is a quote from this website: “Species that evolved together over millions of years
are thrown out of balance by cats and other invasive species, often with
devastating results.”

NSAS distributes the American Bird Conservancy brochure called
Cats Indoors to pet stores, vets, and other places where cat owners can
be found. If you would like to help bring brochures once a year to
places near where you live we have a list. Please email
nsaudubonsociety@gmail.com