Overview
Brief Summary
Biology
Seven-coloured tanagers are usually seen in pairs or groups of up to four individuals, often in mixed-species flocks of varying composition (4). The diet primarily comprises small fruits, berries and seeds, but reportedly also includes the occasional insect (4) (5). The breeding season of this small bird occurs in the austral spring and summer (October to March) (2). Nests made of twigs are constructed in different arboreal bromeliads up to at least 15 meters off the ground (4) 95). Clutches of three to four eggs are typical, incubated for 15 to 17 days (5). Sexual maturity is apparently attained at one year of age (5).
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Description
Aptly named, this spectacularly colourful species is amongst the most beautiful of all birds. The head, chin and mantle are a striking turquoise-green, set off vividly against the black of the throat, bill and surrounding area. The underparts are bright blue on the breast, becoming darker ultramarine on the belly. Wing-coverts are a paler turquoise-blue, and there is dark blue edging to the wing and tail feathers. In stark contrast to most of the plumage, the rump and lower back are a bright, fiery orange, and broad orange edging colours the wing tertials. Females are duller but similarly patterned (2).
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Distribution
Range
Coastal ne Brazil (s Paraíba, e Pernambuco and Alagoas).
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, C. L. Wood, and D. Roberson. 2012. The eBird/Clements checklist of birds of the world: Version 6.7. Downloaded from http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
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Range Description
Tangara fastuosa has been recorded at over 50 localities in Alagoas, Pernambuco and Paraíba, north-east Brazil, and has possibly been extirpated from several additional sites in these states. Surveys carried out from 1999 to 2001 located the species in a number of new sites6,7. Two additional localities in Rio Grande do Norte where the species was recently recorded (Capim Macio and Parque das Dunas Costeiras, and Baia Formosa) require more observations to eliminate the possibility of released cagebirds6. Its range is consequentially larger than previously estimated, but it is still probably less than 5,000 km2, given the small area of severely fragmented Atlantic forest remaining6.
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Range
The seven-coloured tanager is endemic to north-east Brazil, where it is known from Alagoas, Pernambuci and Paraíba (2) (4).
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Ecology
Habitat
Habitat and Ecology
Habitat and Ecology
Systems
It occurs in Atlantic forest and humid forest within interior Alagoas, Pernambuco and Paraíba6. However, the northernmost locality in Rio Grande do Norte is an area of cerrado known as tabuleiro, potentially broadening the species's known habitat preferences6. Nests are situated in dense mid-storey vegetation, usually in large bromeliads, indicating that it cannot use second growth without epiphytes5. It forages in the forest canopy and edge, but also occurs in 1-2 m high second growth2, gardens and orchards with bromeliad-laden trees, and is often seen in mixed-species flocks6. The diet includes seeds, fruit and small arthropods. It breeds in the austral spring and summer (October-March).
Systems
- Terrestrial
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Found in the canopy and edges of lowland and montane forest, usually mature Atlantic and humid forest, but also in severely degraded second growth and, at some sites, regularly in gardens and orchards with bromeliad-laden trees (2) (4). Nests are situated in dense mid-storey vegetation, usually in large bromeliads, indicating that it cannot use second growth without epiphytes (2).
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
VU
Vulnerable
Red List Criteria
A2cd+3cd+4cd;B1ab(i,ii,iii,iv,v);C2a(i)
Version
3.1
Year Assessed
2008
Assessor/s
BirdLife International
Reviewer/s
Butchart, S. & Symes, A.
Contributor/s
Goerck, J., Kirwan, G., Roda, S., Studer, A., Whittaker, A. & Willis, E.
Justification
This species has an extremely small range which is severely fragmented and declining, and a small population which is declining as a result of habitat loss and trapping. It consequently qualifies as Vulnerable. There have been several local extinctions and many sites are highly threatened.
History
- 2004Vulnerable
- 2000Endangered
- 1996Endangered
- 1994Endangered
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Status
Classified as Vulnerable (VU) on the IUCN Red List (1), and listed on Appendix II of CITES (3).
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Trends
Population
Population
Population Trend
Population estimate = 3.6-10.0 individuals/km2 x 320 km2 (20% EOO) = 1,152-3,200, but probably best placed in band 2,500-9,999 individuals as species is more common and widespread than previously thought (density range from lower quartile to median of 21 estimates for eight lowland congeners in the BirdLife Population Densities Spreadsheet).
Population Trend
Decreasing
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Threats
Major Threats
Heavy trapping for trade results from the high prices commanded by the species's exceptional plumage. There has been massive clearance of original Atlantic forest in north-east Brazil with just 2% remaining6, largely as a result of logging and conversion to sugarcane plantations and pastureland. None of the remaining forest fragments is larger than 4,000 ha, with most of this still subject to selective logging and poaching6. For example, forest at Murici reduced from 70 km2 in the 1970s, to a fragmented 30 km2 in 19991. The site is severely threatened by fires spreading from adjacent plantations and further logging, with new roads evident in January 19991,4.
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Encouragingly, the seven-coloured tanager was 'downlisted' from Endangered to Vulnerable on the IUCN Red List in 2004, following important recent discoveries of a number of previously-unknown populations (2) (4). Nevertheless, the bird is still in grave danger of extinction, with the small remaining population in an ongoing decline as a result of habitat loss and trapping to supply the cage-bird trade (2) (4). Just two percent of north-east Brazil's original Atlantic Forest now remains, having been cleared on a massive scale, or replaced by secondary forest without the epiphytes needed for nesting (6), largely as a result of logging and conversion to sugarcane plantations and pastureland (2). Today, just 95 square kilometres of suitable habitat remains, divided over a number of small fragments (6), and most of this is still subject to selective logging and poaching (2) (4). This vibrantly-coloured bird is in high demand for the cage-bird trade, and trapping is heavy due to the high prices commanded by the species' exceptional plumage (2) (6). Professional trappers are able to catch up to 30 seven-coloured tanagers in a single day where the species is at its most common, and law enforcement is noticeably absent, particularly in Alagoas (4). With new roads still being cut through the last remnant forest fragments, access for hunters is getting ever-easier and the chances of long-term survival for this bird look increasingly slim (6).
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Management
Conservation Actions
Conservation Actions
Conservation Actions Underway
CITES Appendix II and protected under Brazilian law. It has been recorded in Dunas de Natal State Park6, Charles Darwin Ecological Refuge, Mata do Pau Ferro Ecological Park6, Serra dos Cavalos UFPE and Tapacurá Ecological Stations, and Saltinho and Pedra Talhada Biological Reserves. Significant areas are being reforested at Pedra Talhada, where protection is enforced by guards and apparently welcomed by local communities3. The recently decreed Murici Ecological Station is still ineffectively implemented and forest loss continues through pasture encroachment and charcoal production6. Captive birds have been confiscated and released into reserves, but this can only succeed if the protection of such areas is improved. Forestation schemes being undertaken to create new-forested areas along rivers and on steep slopes may have positive impacts owing to the ability of the species to utilise second-growth habitat6. Conservation Actions Proposed
Survey sites without recent records, especially São Miguel dos Campos, Tapacurá, Saltinho and João Pessoa, and any other remnant habitat fragments. Pursue conservation initiatives for the most important previously unreported populations, especially Usina Serra Grande, Mata da Macambira, Usina Utinga-Leao and Usina Santo Antonio6. Ensure the de facto protection of the Murici biological reserve. Enforce legal measures to prevent trade.
CITES Appendix II and protected under Brazilian law. It has been recorded in Dunas de Natal State Park6, Charles Darwin Ecological Refuge, Mata do Pau Ferro Ecological Park6, Serra dos Cavalos UFPE and Tapacurá Ecological Stations, and Saltinho and Pedra Talhada Biological Reserves. Significant areas are being reforested at Pedra Talhada, where protection is enforced by guards and apparently welcomed by local communities3. The recently decreed Murici Ecological Station is still ineffectively implemented and forest loss continues through pasture encroachment and charcoal production6. Captive birds have been confiscated and released into reserves, but this can only succeed if the protection of such areas is improved. Forestation schemes being undertaken to create new-forested areas along rivers and on steep slopes may have positive impacts owing to the ability of the species to utilise second-growth habitat6. Conservation Actions Proposed
Survey sites without recent records, especially São Miguel dos Campos, Tapacurá, Saltinho and João Pessoa, and any other remnant habitat fragments. Pursue conservation initiatives for the most important previously unreported populations, especially Usina Serra Grande, Mata da Macambira, Usina Utinga-Leao and Usina Santo Antonio6. Ensure the de facto protection of the Murici biological reserve. Enforce legal measures to prevent trade.
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Conservation
The seven-coloured tanager is listed on CITES Appendix II, and has been protected under Brazilian law since 1965 (2) (4). The species has been recorded in Dunas de Natal State Park, Charles Darwin Ecological Refuge, Mata do Pau Ferro Ecological Park, Serra dos Cavalos UFPE, Tapacurá, and Murici Ecological Stations, and Saltinho and Pedra Talhada Biological Reserves. However, adequate protection of both the bird and its forest habitat within these 'protected areas' is often lacking on the ground, such as at the recently decreed Murici Ecological Station, where forest loss continues due to pasture encroachment and charcoal production. However, significant areas are being reforested at Pedra Talhada, where protection is effectively enforced by guards and apparently welcomed by local communities (2). Natural regeneration and forestation schemes being undertaken elsewhere in the country may benefit this species, whose ability to inhabit second-growth forest is encouraging and provides hope for its future survival (2) (4). Some captive birds are being confiscated and released back into reserves, but this will only succeed if these areas are better protected and legal measures are more strictly enforced to prevent trade (2).
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Wikipedia
Seven-coloured Tanager
The Seven-coloured Tanager (Tangara fastuosa) is a vulnerable species of bird in the Thraupidae family. It is endemic to forests in north-eastern Brazil. It resembles the overall greener Green-headed Tanager; a species confusingly known as the Seven-coloured Tanager (saíra-sete-cores) in Portuguese.
References
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