Why do blue jays eat other birds?

Blue Jays glean insects and take nuts and seeds in trees, shrubs, and on the ground; they also eat grains. They also take dead and injured small ... Male and female both gather materials and build the nest, but on average male does more gathering and female more building. read more

Little does my grandma know, as she watches the birds fly and sing out her window, that Blue Jays actually readily kill and eat other song birds. I didn’t know either, until today. I was sitting in the Cascade Dining Hall enjoying my breakfast looking out the window, when I saw a Blue Jay eating something in a tree. read more

For the same reason that any animal eats anything: to survive. Blue Jays are opportunistic generalists. They will eat anything that they can get their hands on (figuratively speaking). read more

These birds primarily feed on soft fruits, small vertebrates, acorns, and arthropods. They also feed on grasshoppers, caterpillars, and beetles. They predominantly feed on plants, trees, weeds, fruits, berries, peanuts, small invertebrates, cache food, eggs, bread, and meat. Blue Jay Reproduction Facts. The mating season lasts from March to April. read more