What is considered the meanest bird?

What is considered the meanest bird is subjective and depends on whether you mean aggressive toward humans, other birds, or overall dangerous behavior, but several species are consistently ranked as very aggressive or mean. The Australian Magpie is often considered one of the meanest during nesting season because it aggressively dive bombs people, cyclists, and other animals that come near its nest, sometimes causing injuries with its beak and claws, and it remembers faces and will target specific people. Canada Geese are considered very mean in parks because they are large, hiss, charge, flap wings, and bite people who approach goslings during nesting season in spring. Mute Swans are extremely aggressive in defending nests and territories, charging boats and people and capable of injuring with wings. Northern Mockingbirds are mean toward other birds and people near their nests, dive bombing relentlessly. Red-winged Blackbirds are highly territorial and attack people near wetlands. Cassowaries in Australia and New Guinea are considered one of the most dangerous birds in the world, capable of inflicting serious injury with sharp claws and aggressive behavior. Among small birds, European Robins are very territorial and fight to the death. So the meanest bird is often considered to be the Australian Magpie for its targeted dive bombing of humans, or the Cassowary for overall dangerousness, while Canada Geese and swans are meanest in urban parks.