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Tanager

life science Maturity 5-7 Next article →

Tanagers are a diverse family of birds known as Thraupidae. They belong to the order Passeriformes, which includes many common songbirds. This family is the second-largest group of birds in the world. They represent about 4% of all avian species globally. In the Neotropical regions of the Western Hemisphere, they make up 12% of all birds.

Cyanicterus cyanicterus - Blue-backed Tanager (female); Ramal do Pau Rosa, Manaus, Amazonas, Brazil
Cyanicterus cyanicterus - Blue-backed Tanager (female); Ramal do Pau Rosa, Manaus, Amazonas, Brazil

These birds vary significantly in their physical appearance and size. The magpie tanager is the longest species in the family. In contrast, the white-eared conebill is the shortest-bodied species. The white-capped tanager is the heaviest, weighing about 115 grams. Most tanagers possess short, rounded wings. Their beak shapes are often specialized for their specific diets. While many species are brightly colored, some are simply black and white.

Sericossypha albocristata Pollo de monte White-capped Tanager (11198228383)
Sericossypha albocristata Pollo de monte White-capped Tanager (11198228383)

Tanagers are omnivorous, meaning they eat a variety of food sources. Their diets include fruits, seeds, nectar, and flower parts. They also consume many types of insects. Some species find insects by picking them off branches or from wood holes. Others look for prey on the undersides of leaves. Some specialized species wait on branches to catch flying insects mid-air. This dietary specialization allows different species to live in the same area without competing for the same food.

Dacnis cayana -Vale do Ribeira, Registro, Sao Paulo, Brasil-8
Dacnis cayana -Vale do Ribeira, Registro, Sao Paulo, Brasil-8

Most tanagers live in the Western Hemisphere, mainly in tropical regions. About 60% of all tanager species live in South America. Within that continent, 30% of species live in the Andes mountains. Many species are endemic, meaning they live in only one relatively small area. Most birds live in pairs or small groups of three to five individuals. These groups might consist of parents and their offspring, or they may form larger mixed flocks.

Nemosia pileata
Nemosia pileata

Breeding behavior in tanagers involves specific seasonal and social patterns. In temperate areas, the breeding season runs from March through June. In South America, it occurs from September through October. Most species build cup-shaped nests on tree branches, though some nests are almost globular. These nests are often hidden by very dense vegetation. A typical clutch size is between three and five eggs. While the female incubates the eggs and builds the nest, the male may help by feeding her.

Compsothraupis loricata Scarlet-throated Tanager (female); Januária, Minas Gerais, Brazil
Compsothraupis loricata Scarlet-throated Tanager (female); Januária, Minas Gerais, Brazil

Our understanding of tanager taxonomy has changed due to modern science. The family Thraupidae was introduced in 1847 by German ornithologist Jean Cabanis. Traditionally, scientists grouped birds based on their feeding specializations. For example, nectar-feeders were placed in the Coerebidae family. However, modern molecular phylogenetic studies have reorganized these groups. These studies use DNA to show true evolutionary relationships. As a result, many birds with "tanager" in their names, like the scarlet tanager, are now classified in the Cardinalidae family.

Today, the Thraupidae family is much larger than once thought. As of March 2025, the family contains 393 species. These are divided into 105 genera and 15 subfamilies. This reorganization has changed how we view bird connections. For instance, 106 species with "finch" in their names actually belong to Thraupidae. This shows how important molecular biology is for understanding the tree of life.

Darwin's finches
Darwin's finches
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🖼️ Images & Media (108)
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File:Brown Tanager - Itatiaia - Brazil MG 0161 (23224278996).jpg
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File:Yellow-shouldered Grosbeak.jpg
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File:Nemosia pileata.jpg
Nemosia pileata.jpg
File:Cyanicterus cyanicterus - Blue-backed Tanager (female); Ramal do Pau Rosa, Manaus, Amazonas, Brazil.jpg
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File:Sericossypha albocristata Pollo de monte White-capped Tanager (11198228383).jpg
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File:Compsothraupis loricata Scarlet-throated Tanager (female); Januária, Minas Gerais, Brazil.jpg
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