Pigeon
Pigeons abound in most major North American cities, although most people see them as nuisances. This common bird, on the other hand, is highly intelligent. Because pigeons have been the focus of several scientific studies, there is a plethora of information available on their cognitive capacities. Pigeons, for example, can recognize hundreds of pictures even after several years. They can also recognize themselves in a mirror, be trained to do a series of motions, and distinguish between two paintings — amazing feats for such a common bird.
But that's only the tip of the iceberg. Pigeons have been utilized by governments and military all over the world for a reason. During both World Wars, these pigeons conveyed crucial communications beyond enemy lines before technology advanced. Other pigeons, armed with small cameras, flew over enemy territory to gather intelligence. So, if you see a pigeon pecking at the ground, don't be fooled: this animal doesn't have a bird brain; it's a brainy bird. So there's nothing wrong with pigeons being on the list of the smartest animals.
Scientific Name : Columbidae