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 .
Black catbird
The black catbird ("Melanoptila glabrirostris") is a songbird species in the monotypic genus Melanoptila, part of the family Mimidae. At in length and in mass, it is the smallest of the mimids. Sexes appear similar, with glossy black plumage, black legs and bill, and dark brownish eyes. The species is endemic to the Yucatán Peninsula, and is found as far south as Campeche, northern Guatemala and northern Belize. Although there are historical records from Honduras and the US state of Texas, the species is not now known to occur in either location. It is found at low elevations in semi-arid to humid habitats ranging from shrubland and abandoned farmland to woodland with thick understory, and is primarily sedentary.