cellular - characterized by or divided into or containing cells or compartments (the smallest organizational or structural unit of an organism or organization); the cellular construction of a beehive; any effective opposition to a totalitarian regime must be secretive and cellular.
They are among the smallest of birds, most species measuring in the 7.5â13 cm (3â5 in) range. Indeed, the smallest extant bird species is a hummingbird, the 5-cm bee hummingbird, weighing less than a U.S. penny (2.5 g). They are known as hummingbirds because of the humming sound created by their beating wings which flap at high frequencies audible to humans.
The World's Ten Smallest Birds - Weird Existence. The Bee hummingbird. Is the worlds smallest bird. which is about 5.5cm long and weighs around 1.6 to 1.8g. But the largest among Humming birds is the Giant Humming bird it measures 23 cm in length and 18-20g in weight. the male bird is a bit smaller than the female.