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Whole body or most of the feathers are black, hence the name. More nest in the tree nest. Often in groups and flying and Ming, voice hoarse. Omnivorous cereals, insects, etc., more than the power, are beneficial birds.

"Kafka" in the Czech language is "Jacket" means, Kafka father's shop that is to incense to serve as a badge. To commemorate the unique writer, in 1983 found the asteroid 3412 to "Kafka" to name. Japanese writer Murakami Haruki loves to read Kafka, and the name of one of his novels is called "Kafka on the beach". And straight, whole body feathers black, wing green, more gregarious in the woods or fields, with grains, fruits, insects and carrion for food.

intelligence

University of Montreal, Canada, McGill University animal behavior expert Louis - Leifei Boer began to IQ test children, the excretion of various types of birds IQ level. Leverberg is mainly engaged in intelligence and its evolution in the various species of the process of research, especially on the size of the brain and the relationship between intelligence and the subject of interest.

According to the study: crow is outside the human first-class IQ of animals, its comprehensive intelligence roughly equal to the level of intelligence with the dog. This requires that the crows have a much more complex structure of the brain cells than the dogs, and it is particularly surprising that the crows have the ability to use or even make the tools to achieve their goals in the animal world beyond humans, even if the human The species of apes can only use the tools (with stones to break nuts), they can also according to the shape of the container to accurately determine the location and size of food required, "crow water" story reflects the clever thinking.