|Adult male Bullock's oriole|
The Icteridae are a family of small to medium-sized New World songbirds. They are usually brightly colored. Most species have black as a main plumage color, often enlivened by yellow, orange or red. The family is extremely varied in size, shape, behavior and coloration.
This group includes the New World blackbirds, New World orioles, the bobolink, meadowlarks, grackles, cowbirds, oropendolas and caciques. Despite their similar names, they are only distantly related to the Old World common blackbird (which is a thrush) or the Old World orioles.
Icterids are unusual in songbirds because they have considerable sexual dimorphism. For example, the male great-tailed grackle is 60% heavier than the female. The smallest icterid species is the orchard oriole, in which the female averages 15 cm in length (6 in) and 18 grams (0.040 pounds) in weight, while the largest is the Amazonian oropendola, the male of which measures 52 cm (20 in) and weighs about 550 grams (1.21 pounds). This variation in size is greater than usual in passerine families.
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Icterid Facts for Kids. Kiddle Encyclopedia.