The olive-green tanager (''Orthogonys chloricterus'') is a species of

bird 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 lightweigh ...

in the family Mitrospingidæ. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

Taxonomy and systematics

The olive-green tanager and the three other species in family Mitrospingidæ were previously placed in family Thraupidæ, the "true" tanagers. A 2013 publication detailed how they did not belong there and proposed the new family for them. The North and South American Classification Committees of the

American Ornithological Society The American Ornithological Society (AOS) is an ornithological organization based in the United States. The society was formed in October 2016 by the merger of the American Ornithologists' Union (AOU) and the Cooper Ornithological Society. Its m ...

accepted the new placement in July 2017 and March 2019, respectively. The

International Ornithological Committee The International Ornithologists' Union, formerly known as the International Ornithological Committee, is a group of about 200 international ornithologists, and is responsible for the International Ornithological Congress and other international ...

(IOC) followed suit in January 2018. The olive-green tanager is the only member of its genus and has no subspecies.

Description

The olive-green tanager is long. The adult is olive green above and dull yellow below; it has a tinge of olive on the sides and flanks.

Distribution and habitat

The olive-green tanager is found only in southeastern Brazil, from

Espírito Santo Espírito Santo (, , ; ) is a state in southeastern Brazil. Its capital is Vitória, and its largest city is Serra. With an extensive coastline, the state hosts some of the country's main ports, and its beaches are significant tourist attra ...

state south to eastern Santa Catarina and northeastern

Rio Grande do Sul Rio Grande do Sul (, , ; "Great River of the South") is a Federative units of Brazil, state in the South Region, Brazil, southern region of Brazil. It is the Federative_units_of_Brazil#List, fifth-most-populous state and the List of Brazilian st ...

. It inhabits the interior and edges of humid

montane forest Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial f ...

at elevations of .

Behavior

Feeding

The olive-green tanager's diet is primarily insects, though it also eats fruit. It typically forages in flocks of its own species that may number up to 20 individuals but more usually have about eight. It feeds in the mid- to upper levels of the forest, usually picking prey from leaves, and it also sallies for flying insects.

Breeding

One olive-green tanager was noted carrying nest material to a

bromeliad The Bromeliaceae (the bromeliads) are a family of monocot flowering plants of about 80 genera and 3700 known species, native mainly to the tropical Americas, with several species found in the American subtropics and one in tropical west Africa, ...

in a large tree. No other information has been published about its breeding

phenology Phenology is the study of periodic events in biological life cycles and how these are influenced by seasonality, seasonal and interannual variations in climate, as well as environmental factor, habitat factors (such as elevation). Examples includ ...

Vocalization

The olive-green tanager's song has been rendered as "tséé-si, si, si, tséé-si, si, si." Its call is a buzzy "tseee" and it also calls "wheek!" while foraging.

Status

The

IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

has assessed the olive-green tanager as being of Least Concern. "Despite local population declines and fragmentation, its long-term viability should be assured if protection continues for the parks and reserves where it remains."

References

{{Taxonbar, from=Q278819 olive-green tanager Birds of the Atlantic Forest Endemic birds of Brazil olive-green tanager Taxa named by Louis Jean Pierre Vieillot Taxonomy articles created by Polbot