The Baltimore oriole (Icterus galbula) is a small icterid blackbird common in eastern North America as a migratory breeding bird. It received its name from the resemblance of the male’s colors to those on the coat-of-arms of Lord Baltimore. Like all New World orioles, it is named after an unrelated, physically similar family found in the Old World: the Oriolidae. At one time, this species and the Bullock’s oriole, Icterus bullockii, were considered to be a single species called the northern oriole.
The Baltimore oriole is the state bird of Maryland. It is also the inspiration for the Baltimore Orioles baseball club.
Baltimore orioles are found in the Nearctic in summer, primarily the eastern United States. They breed from Minnesota to Maine and south to central Mississippi and Alabama and northern Georgia. They migrate to winter in the Neotropics as far north as Mexico and sometimes the southern coast of the United States, but predominantly in Central America and northern South America. Some areas of the southern United States may retain orioles all winter if they have feeders that appeal to them. The range of this bird overlaps with that of the similar Bullock’s oriole in the Midwest, and the two species were once considered to be conspecific under the name northern oriole because they form fertile hybrids. The Baltimore oriole is a rare vagrant to Western Europe.
Baltimore orioles are often found high up in large, leafy deciduous trees, but do not generally reside in deep forests. The species has been found in summer and migration in open woodland, forest edge, and partially wooded wetlands or stands of trees along rivers. They are very adaptable and can breed in a variety of secondary habitats. In recent times, they are often found in orchards, farmland, urban parks and suburban landscapes as long as they retain woodlots. In Mexico, they winter in flowering canopy trees, often over shade coffee plantations. source