After habitat loss, the single largest source of bird mortality in Canada is domestic and feral cats.
![35919345532_1bccb9691e_k A cat sitting on a window ledge peering through the sunlit window panes](https://birdscanada.org/wp-content/uploads/2020/06/35919345532_1bccb9691e_k.jpg)
On average, cats kill more than 100 million birds each year in Canada. Domestic cats are not native to any ecosystem, and allowing them to roam outdoors has a negative impact not only on birds, but other native wildlife populations as well.
Keeping cats inside or outside in a controlled environment by using a leash and harness or a Catio, is best for native wildlife, and for the health of your pets. For more tips and resources visit: www.catsandbirds.ca.