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 .
Little bronze cuckoo
The little bronze cuckoo ("Chrysococcyx minutillus") is a species of cuckoo in the family Cuculidae. It is found in Southeast Asia, New Guinea and northern and eastern Australia. Its natural habitat is subtropical or tropical moist lowland forests. This is the world's smallest cuckoo, at 17 grams and . The subspecies "rufomerus" and "crassirostris" are sometimes given specific status.