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Tanager

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Tanagers
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Superfamily: Emberizoidea
Family: Thraupidae
Cabanis, 1847
Type genus
Thraupis
Boie, F., 1826
Genera

Many: see text

The tanagers (singular /ˈtænədʒər/) 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.[1]

Traditionally, the family contained around 240 species of mostly brightly colored fruit-eating birds.[2] As more of these birds were studied using modern molecular techniques, it became apparent that the traditional families were not monophyletic. Euphonia and Chlorophonia, which were once considered part of the tanager family, are now treated as members of the Fringillidae, in their own subfamily (Euphoniinae). Likewise, the genera Piranga (which includes the scarlet tanager, summer tanager, and western tanager), Chlorothraupis, and Habia appear to be members of the family Cardinalidae,[3] and have been reassigned to that family by the American Ornithological Society.[4]

Description

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Tanagers are small to medium-sized birds. The shortest-bodied species, the white-eared conebill, is 9 cm (4 in) long and weighs 6 g (0.2 oz), barely smaller than the short-billed honeycreeper. The longest, the magpie tanager is 28 cm (11 in) and weighs 76 g (2.7 oz). The heaviest is the white-capped tanager, which weighs 114 g (4.02 oz) and measures about 24 cm (9.4 in). Both sexes are usually the same size and weight.[5][6]

Tanagers are often brightly colored, but some species are black and white, and some dull brownish or greenish-gray. Males are typically more brightly colored than females and juveniles. Most tanagers have short, rounded wings. The shape of the bill is linked to the species' foraging habits, with short-, stout-billed seed-eating species, longer-billed fruit-eating species, and slender-billed nectar-feeding species; most also eat insects when available.[5]

Distribution

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Tanagers are restricted to the Western Hemisphere and mainly to the tropics. About 60% of tanagers live in South America, and 30% of these species live in the Andes. Many species are endemic to a relatively small area.[6][5]

Behavior

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Most tanagers live in pairs or in small groups of three to five individuals. These groups may consist simply of parents and their offspring. These birds may also be seen in single-species or mixed flocks. Many tanagers are thought to have dull songs, though some are elaborate.[5]

Diet

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Tanagers are omnivorous, and their diets vary by genus. They have been seen eating fruit, seeds, nectar, flower parts, and insects. Many pick insects off branches or from holes in wood. Other species look for insects on the undersides of leaves. Yet others wait on branches until they see a flying insect and catch it in the air. Many of these particular species inhabit the same areas, but these specializations alleviate competition.

Breeding

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The breeding season is March through June in temperate areas and in September through October in South America. Some species are territorial, while others build their nests closer together. Little information is available on tanager breeding behavior. Males show off their brightest feathers to potential mates and rival males. Some species' courtship rituals involve bowing and tail lifting.

Most tanagers build cup nests on branches in trees. Some nests are almost globular. Entrances are usually built on the side of the nest. The nests can be shallow or deep. The species of tree in which they choose to build their nests and the nests' positions vary among genera. Most species nest in areas with dense vegetation. For some species no information is yet known about the nests.

The clutch size is three to five eggs. The female incubates the eggs and builds the nest, but the male may feed the female while she incubates. Both sexes feed the young. Five species have helpers assist in feeding the young. These helpers are thought to be the previous year's nestlings.

Taxonomy

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The family Thraupidae was introduced (as the subfamily Thraupinae) in 1847 by German ornithologist Jean Cabanis. The type genus is Thraupis.[7][8]

The family Thraupidae is a member of an assemblage of over 800 birds known as the New World, nine-primaried oscines. The traditional pre-molecular classification was largely based on the different feeding specializations. Nectar-feeders were placed in Coerebidae (honeycreepers), large-billed seed-eaters in Cardinalidae (cardinals and grosbeaks), smaller-billed seed-eaters in Emberizidae (New World finches and sparrows), ground-foraging insect-eaters in Icteridae (blackbirds) and fruit-eaters in Thraupidae.[1] This classification was known to be problematic as analyses using other morphological characteristics often produced conflicting phylogenies.[9] Beginning in the last decade of the 20th century, a series of molecular phylogenetic studies led to a complete reorganization of the traditional families. Thraupidae now includes large-billed seed eaters, thin-billed nectar feeders, and foliage gleaners as well as fruit-eaters.[1]

One consequence of redefining the family boundaries is that for many species their common names are no longer congruent with the families in which they are placed. As of July 2020 there are 39 species with "tanager" in the common name that are not placed in Thraupidae. These include the widely distributed scarlet tanager and western tanager, which are both now placed in Cardinalidae. There are also 106 species within Thraupidae that have "finch" in their common name.[10]

A molecular phylogenetic study published in 2014 revealed that many of the traditional genera were not monophyletic.[1] In the resulting reorganization six new genera were introduced, eleven genera were resurrected, and seven genera were abandoned.[11][10]

As of March 2025 the family contains 393 species which are divided into 15 subfamilies and 105 genera.[1][10] For a complete list, see the article List of tanager species.

List of genera

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Catamblyrhynchinae

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The plushcap has no close relatives and is now placed in its own subfamily. It was previously placed either in the subfamily Catamblyrhynchinae within the Emberizidae or in its own family Catamblyrhynchidae.[1]

ImageGenusSpecies
Catamblyrhynchus Lafresnaye, 1842

Charitospizinae

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The coal-crested finch is endemic to the grasslands of Brazil and has no close relatives. It is unusual in that both sexes have a crest. It was formerly placed in Emberizidae.

ImageGenusSpecies
Charitospiza Oberholser, 1905

Orchesticinae

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Two species with large thick bills. Parkerthraustes was formerly placed in Cardinalidae.

ImageGenusSpecies
Orchesticus Cabanis, 1851
Parkerthraustes Remsen, 1997

Nemosiinae

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Brightly colored, sexually dichromatic birds. Most form single-species flocks.

ImageGenusSpecies
Nemosia Vieillot, 1816
Cyanicterus Bonaparte, 1850
Sericossypha Lesson, 1844
Compsothraupis Richmond, 1915

Emberizoidinae

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Grassland dwelling birds that were formerly placed in Emberizidae.

ImageGenusSpecies
Coryphaspiza G.R. Gray, 1840
Embernagra Lesson, 1831
Emberizoides Temminck, 1822

Porphyrospizinae

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Yellow billed birds. The blue finch (Rhopospina caerulescens) was formerly placed in Cardinalidae; the other species were formerly placed in Emberizidae.

ImageGenusSpecies
Incaspiza Ridgway, 1898
Rhopospina Cabanis, 1851

Hemithraupinae

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These species are sexually dichromatic and many have yellow and black plumage. Except for Heterospingus, they have slender bills.

ImageGenusSpecies
Chlorophanes Reichenbach, 1853
Iridophanes Ridgway, 1901
Chrysothlypis Berlepsch, 1912
Heterospingus Ridgway, 1898
Hemithraupis Cabanis, 1850

Dacninae

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Sexually dichromatic species—males have blue plumage and females are green.

ImageGenusSpecies
Tersina Vieillot, 1819
Cyanerpes Oberholser, 1899
Dacnis Cuvier, 1816

Saltatorinae

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Mainly arboreal with long tails and thick bills. Formerly placed in Cardinalidae.

ImageGenusSpecies
Saltatricula Burmeister, 1861
Saltator Vieillot, 1816

Coerebinae

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Diversity of Darwin's finches

This subfamily includes Darwin's finches, of which all but the Cocos finch are endemic to the Galápagos Islands. Most Coerebinae species were formerly placed in Emberizidae; the exceptions are the bananaquit that was placed in Parulidae and the orangequit that was placed in Thraupidae. These species build domed or covered nests with side entrances. They have evolved a variety of foraging techniques, including nectar-feeding (Coereba, Euneornis), seed-eating (Geospiza, Loxigilla, Tiaris), and insect gleaning (Certhidea).[1]

ImageGenusSpecies
Coereba Vieillot, 1809
Tiaris Swainson, 1827
Euneornis Fitzinger, 1856
Melopyrrha Bonaparte, 1853
Loxipasser Bryant, 1866
Phonipara Bonaparte, 1850
Loxigilla Lesson, 1831
Melanospiza Ridgway, 1897
Asemospiza Burns, Unitt, & Mason, 2016
Darwin's finches:
Certhidea Gould, 1837
Platyspiza Ridgway, 1897
Pinaroloxias Sharpe, 1885
Camarhynchus Gould, 1837
Geospiza Gould, 1837

Tachyphoninae

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Most of these are lowland species. Many have ornamental features such as crests, and many have sexually dichromatic plumage.[1]

ImageGenusSpecies
Volatinia Reichenbach, 1850
Conothraupis Sclater, PL, 1880
Creurgops Sclater, PL, 1858
Eucometis Sclater, PL, 1856
Trichothraupis Cabanis, 1851
Heliothraupis Lane et al., 2021
Loriotus Jarocki, 1821
Coryphospingus Cabanis, 1851
Tachyphonus Vieillot, 1816
Rhodospingus Sharpe, 1888
Lanio Vieillot, 1816
Ramphocelus Desmarest, 1805

Sporophilinae

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These species were formerly placed in Emberizidae.

ImageGenusSpecies
Sporophila Cabanis, 1844
Seedeaters and seed finches (includes species previously assigned to Dolospingus and Oryzoborus) 41 species:

Poospizinae

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Some of these species were formerly placed in Emberizidae.

ImageGenusSpecies
Piezorina Lafresnaye, 1843
Xenospingus Cabanis, 1867
Cnemoscopus Bangs & Penard, 1919
Pseudospingus Berlepsch & Stolzmann, 1896
Poospiza Cabanis, 1847
Kleinothraupis Burns, Unitt, & Mason, 2016
Sphenopsis Sclater, 1862