The common raven (Corvus corax) is one of the most intelligent birds — and even one of the most intelligent animals in the world. It is protected under the Migratory Bird Act of 1918, and it was once a traveling bird that flew from Canada to Mexico following the best of the weather throughout each year.
Regrettably, this once migratory bird has become a permanent resident in the California deserts, and it has led the desert ecosystem into a great imbalance. Some ask why an entire species of bird would no longer be migratory. It is a form of classic economics. There are possible risks involved in such great travels: unsafe locations, new predators, changes in water availability, less food, and harsh weather conditions; plus, flying is tiring.
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