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Cats vs Birds

Why Does My Cat Eat Birds? Understanding Your Feline’s Predatory Instincts

July 21, 2023

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Cats are known for their playful and curious nature. They are also known for their hunting instincts, which can sometimes lead to them catching and eating birds. This behavior can be puzzling and even distressing for cat owners, especially bird lovers.

But why do cats eat birds? Is it a sign of malnutrition or just an instinctual behavior? Let’s explore feline behavior to understand why your cat might be dining on our feathered friends.

Cat hunting

The Hunter’s Instinct

Cats are natural-born hunters. This instinct is deeply ingrained in their DNA, passed down from their wild ancestors. Even though domestic cats are well-fed and cared for, they retain this hunting instinct.

  1. Exercise and Play: Hunting provides cats with exercise and mental stimulation. It’s a game for them, a chance to practice their stalking and pouncing skills. With their quick movements and bright colors, birds are particularly enticing targets.
  2. Instinctual Behavior: Cats are obligate carnivores, requiring a meat diet to thrive. Their wild ancestors hunted for survival, and this instinct has been passed down to our domestic felines. Even if a cat is well-fed at home, it may still hunt and eat birds due to this instinctual drive.
  3. Gift-Giving: Sometimes, cats bring their hunted prey to their owners. This behavior is often interpreted as a gift from the cat to its owner. It’s a way for cats to show affection and share their “success” with their human family.
cat catches bird

Nutritional Needs and Hunting

While hunting domestic cats is primarily driven by instinct, it can sometimes be influenced by their dietary needs. Cats require certain nutrients in animal tissues, especially taurine, an essential amino acid in meat. A taurine deficiency can lead to serious cat health problems, including heart disease and blindness.

  • Taurine: Birds are a good source of taurine. If a cat’s diet is deficient in taurine, it might be more inclined to hunt birds to supplement it.
  • Variety in Diet: Cats may also hunt and eat birds to add variety. Eating the same food every day can be monotonous for cats, and hunting allows them to diversify their diet.
  • Raw Food Cravings: Some cats may prefer the taste and texture of raw food. Eating birds can satisfy this craving for raw, fresh meat.

The Impact on Bird Populations

While hunting is a natural behavior for cats, it can significantly impact local bird populations. According to a study by the Smithsonian Conservation Biology Institute and the U.S. Fish and Wildlife Service, domestic cats are responsible for the deaths of 1.3 to 4.0 billion birds annually in the United States alone. This predation, habitat loss, and climate change can put additional pressure on bird species, particularly those already vulnerable.

  • Outdoor Cats: Cats with access to the outdoors are likelier to hunt birds. Keeping cats indoors can help protect local bird populations.
  • Bells and Collars: Attaching a bell to a cat’s collar can help warn birds of a cat’s approach, potentially reducing the number of successful hunts.
  • Feeding Stations: Placing bird feeders and baths out of a cat’s reach can also help protect birds.


While it can be distressing to see your cat catch and eat a bird, it’s important to remember that hunting is a natural behavior for cats. It’s a part of their instinctual drive to hunt and their dietary needs as obligate carnivores. However, as responsible pet owners, we can take steps to manage our cats’ hunting instincts and minimize their impact on local bird populations.

Understanding your cat’s behavior is key to ensuring their health and happiness and the welfare of the wildlife in your area. So, the next time you see your cat eyeing a bird, remember that it’s acting on instincts honed over thousands of years. It’s up to us as cat owners to guide these instincts in a way that benefits our cats, the birds, and the environment.

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