Birds are a group of warm-blooded vertebrates constituting the class Aves, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the 5.5 cm (2.2 in) bee hummingbird to the 2.8 m common ostrich. There are over 11,000 living species and they are split into 44 orders. More than half are passerine or "perching" birds. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. The study of birds is called ornithology.
A passerine is any bird of the order Passeriformes which includes more than half of all bird species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their toes, which facilitates perching.
Birds of prey or predatory birds, also known as raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates. In addition to speed and strength, these predators have keen eyesight for detecting prey from a distance or during flight, strong feet with sharp talons for grasping or killing prey, and powerful, curved beaks for tearing off flesh. Although predatory birds primarily hunt live prey, many species also scavenge and eat carrion.
The New World warblers or wood-warblers are a group of small, often colorful, passerine birds that make up the family Parulidae and are restricted to the New World. The family contains 120 species. They are not closely related to Old World warblers or Australian warblers. Most are arboreal, but some, like the ovenbird and the two waterthrushes, are primarily terrestrial. Most members of this family are insectivores.
The tanagers comprise the bird family Thraupidae, in the order Passeriformes. The family has a Neotropical distribution and is the second-largest family of birds. It represents about 4% of all avian species and 12% of the Neotropical birds.
Philip Bradley Bird is an American filmmaker, animator, and voice actor. He has had a career spanning over four decades in both animation and live-action.
The nine-primaried oscines is a group of bird families in the suborder Passeri (oscines) of the Passeriformes. The composition of the group has changed since the term was introduced but is now considered to consist of seven major families—Fringillidae, Emberizidae, Cardinalidae, Thraupidae, Passerellidae, Parulidae and Icteridae—plus some small families. When Fringillidae is omitted the remaining six families are referred to as the "New World" nine-primaried oscines.
The Puerto Rican tanager is a small passerine bird endemic to the archipelago of Puerto Rico. It is the only member of the genus Nesospingus and has historically been placed in the tanager family, but recent studies indicate it as either belonging in its own family Nesospingidae or as being a member of Phaenicophilidae. Its closest relatives are likely the spindalises. The Puerto Rican tanager is known to locals as llorosa, which means 'cryer'.
Passerida is, under the Sibley-Ahlquist taxonomy, one of two parvorders contained within the suborder Passeri. While more recent research suggests that its sister parvorder, Corvida, is not a monophyletic grouping, the Passerida as a distinct clade are widely accepted.
Spindalis is a genus consisting of four non-migratory species of bird. It is the only genus in the family Spindalidae. The species are mostly endemic to the West Indies; exceptions include populations of western spindalises on Cozumel Island, off the Yucatán Peninsula's east coast, and in extreme southeastern Florida. The species were traditionally considered aberrant members of the tanager family Thraupidae. Taxonomic studies recover them as a sister group to the Puerto Rican tanager, and some group Spindalidae and Nesospingidae within the Phaenicophilidae.
The green-tailed warbler, also known as the green-tailed ground-tanager, is a species of bird of the family Phaenicophilidae, the Hispaniolan tanagers. It is endemic to the island of Hispaniola which is shared by Haiti and the Dominican Republic.
The black-crowned palm-tanager or black-crowned tanager is a species of bird of the family Phaenicophilidae, the Hispaniolan palm-tanagers. It is endemic to the island of Hispaniola which is shared by Haiti and the Dominican Republic.
Phaenicophilus is a genus of birds that was formerly placed in the family Thraupidae, but is now placed in the Hispaniolan tanager family Phaenicophilidae. Its members are known as palm-tanagers.
The white-winged warbler, also called the white-winged ground-warbler or Hispaniolan highland-tanager, is a Vulnerable species of bird of the family Phaenicophilidae, the Hispaniolan tanagers. It is endemic to the island of Hispaniola which is shared by Haiti and the Dominican Republic.
Emberizoidea is a superfamily of passerines that are referred to as the New World nine-primaried oscines that includes majority of endemics which are exclusive to the New World. Nearly 892 species belong to this group as it includes buntings, American sparrows, the New World blackbirds, the parulid warblers, the cardinals, and the tanagers.
