Interesting and Unbelievable Facts

There are more than 300 identified species of hummingbirds. They are easily distinguishable due to their small size and other unique features.  The hummingbird’s most important sense is its vision. It has  excellent color vision  and sees colors similar to that of humans. They also can see UV (ultraviolet) light. ( Source ) Hummingbirds have the  largest brain  relative to their size among all birds. Their brain is 4.2% of their body weight. ( Source ) Hummingbirds have one of the  best memories  in the animal kingdom. They also may have episodic memory that is present only in human beings. ( Source ) Many hummingbird species spend winter and summer in different areas. For this purpose, they  migrate long distances  twice a year. In contrast to most other bird species, hummingbirds  migrate individually  instead of in flocks. Before these long migrations, these birds gain up to  40% of their original weight . Their uniqu...