Data Zone
Justification of Red List category
This species's population is suspected to be declining rapidly as a result of ongoing forest loss, degradation and fragmentation. For this reason, it is listed as Near Threatened.
Population justification
No direct estimates of the species's population size or population density are available, but this species is described as 'rare' (Aleixo et al. 2018). In FLONA de Caxiuanã, the species was not recorded at six 100 ha plots sampled in 2003 and 2005 (Valente 2006). It was recorded in only one of five surveyed sites in the Tapirapé-Aquiri National Forest (Aleixo et al. 2018).
The density of the closely related C. procurvoides has been estimated at 0.3-2.4 individuals per km2 in French Guiana (Thiollay 1986), 1.25 pairs per km2 also in French Guiana (Thiollay 1994) and 2.86 (2.27-3.60) individuals per km2 in Manaus, Amazonas (Soto 2013). Based on the first quartile and median of the above estimates, the estimated area of tree cover with at least 50% canopy cover within the species's range in 2020 (c.127,000 km2; Global Forest Watch 2021), and assuming the tree cover to be 10-20% occupied, the population size is tentatively suspected to fall within the range 13,000 - 41,000 mature individuals. Surveys are required to confirm the population size.
The subpopulation structure is not known, but based on visual inspection of satellite data on tree cover within the species's range, it is assumed that there may be several isolated subpopulations.
Trend justification
According to remote sensing data on tree cover, approximately 12% of tree cover with at least 50% canopy cover was lost from within the species's range over the past three generations (11 years) to 2020 (Global Forest Watch 2021). Assuming that forest continues to be lost at the same rate, 14-19% of remaining tree cover is projected to be lost over the next 11 years. A recent study in northeast Amazonia indicated that habitat degradation contributed an average additional 51% loss of biodiversity (Barlow et al. 2016). This species is susceptible to fragmentation and appears to have disappeared from degraded forest in the Tucuruí municipality, where it was previously recorded in the 1980s (Aleixo et al. 2018). It is therefore assumed that the species's population size may be declining faster than the rate of tree cover, with a suspected rate of population decline of 12-18% over the past three generations and a suspected rate of population decline of 14-28% over the next three generations (11 years).
Occurs in southeastern Amazonian Brazil south of Amazon, in the central portion of the Rio Xingú and Rio Tocantins interfluve (Portes et al. 2013, Aleixo et al. 2018). The southern limit of the species's range is unclear.
Inhabits humid evergreen forest. Largely restricted to terra firme forest, only occasionally entering floodplain-forest. Closely associated with bamboo thickets or forests rich in vine tangles, where ecological separation less clear. Generally in interior of mature forest or dense thickets of bamboo, but sometimes visits forest edge. The closely-related C. procurvoides is negatively affected by forest fragmentation and is much less abundant in isolated forest fragments (Offerman et al. 1995, Stouffer and Bierregaard 1995). Tropical lowlands, primarily below 500 m. Feeds on arthropods. Joins mixed feeding flocks.
The main threat is the loss, degradation and fragmentation of forest. Threats contributing to forest loss within the species's range include the construction of hydro-electric power plants, mineral extraction and conversion to agriculture and pastureland.
Conservation Actions Underway
The species is included in the National Action Plan for the Conservation of the Birds of Amazonia (ICMBio 2015). It occurs in the National Forests of Carajás, Caxiuanã and Tapirapé-Aquiri (Aleixo et al. 2018).
Conservation Actions Proposed
Carry out surveys to gain estimates of the population density and population size. Monitor populations to ascertain trend.
Ensure sufficient management of protected areas where the species occurs. Create further protected areas in the species's range. Enforce legislation regulating deforestation.
Text account compilers
Wheatley, H.
Contributors
Derhé, M., Ekstrom, J., Butchart, S. & Mendes Lima, D.
Recommended citation
BirdLife International (2024) Species factsheet: Xingu Scythebill Campylorhamphus multostriatus. Downloaded from
https://datazone.birdlife.org/species/factsheet/xingu-scythebill-campylorhamphus-multostriatus on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 22/12/2024.