Is cat food poisonous to blue jays?

Cat food is not poisonous to blue jays. However, it is not a healthy food for them. Cat food is high in protein and fat, which can lead to obesity in blue jays. It also contains ingredients that can be harmful to birds, such as onions, garlic, and salt. If you want to feed blue jays, it is best to give them unsalted peanuts, sunflower seeds, or fruit. These foods are healthy and nutritious for blue jays.