Green Stork
Green stork is known to drop a small object to the surface of the water, hoping there is a tricked small fish who thinks it is food, then this heron quickly catches unsuspecting victims. Not all green storks use this technique, but those who become very talented, and they even experiment with different types of bait.
Several storks have been seen stealing bread because he once saw people feeding ducks in a pond by using bread as bait. Other storks are known to often catch small fish but not to eat, but are used as bait for larger fish.
Some experts believe that they learn from humans, while others think that they learn by themselves by observing how small fish will investigate small objects or animals that fall into the water. This behavior is definitely not instinctive, which makes this green crane very likely to be the smartest predator on this list.
