Hummingbird
Hummingbirds are birds native to the Americas and constitute the biological family Trochilidae. They are among the smallest of birds, most species measuring in length. Indeed, the smallest extant bird species is a hummingbird, the bee hummingbird weighing less than .
Lesser flamingo
The lesser flamingo is the smallest species of flamingo, though it is a tall and large bird by most standards. The species can weigh from . The standing height is around . The total length (from beak to tail) and wingspan are in the same range of measurements, from . Most of the plumage is pinkish white. The clearest difference between this species and the greater flamingo, the only other Old World species of flamingo, is the much more extensive black on the bill. Size is less helpful unless the species are together, since the sexes of each species also differ in height.