Data Zone
Justification of Red List category
This species has a large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence under 20,000 km² combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (under 10,000 mature individuals with a continuing decline estimated to be over 10% in ten years or three generations, or with a specified population structure). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (over 30% decline over ten years or three generations). For these reasons the species is evaluated as Least Concern.
Population justification
The global population size has not been quantified, but this species is described as 'uncommon and patchily distributed' (Stotz et al. 1996). This species is suspected to lose 8.5-9.5% of suitable habitat within its distribution over 12 years based on a model of Amazonian deforestation (Soares-Filho et al. 2006, Bird et al. 2011). Given the susceptibility of the species to fragmentation and/or edge effects, it is therefore suspected to decline by 0-25% over three generations.
Trend justification
This species is suspected to lose 8.5-9.5% of suitable habitat within its distribution over three generations (12 years) based on a model of Amazonian deforestation (Soares-Filho et al. 2006, Bird et al. 2011). Given the susceptibility of the species to fragmentation and/or edge effects, it is therefore suspected to decline by <25% over three generations.
Occurs in central and eastern Amazonian Brazil.
Inhabits humid evergreen forest. Largely restricted to terra firme forest, only occasionally entering floodplain-forest; even along rivers and on islands apparently restricted to dry ground and not in flooded forest, being replaced in latter by C. trochilirostris. In some parts of range, 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. Tropical lowlands, primarily below 500 m.
Text account compilers
Rutherford, C.A.
Recommended citation
BirdLife International (2024) Species factsheet: Tapajos Scythebill Campylorhamphus probatus. Downloaded from
https://datazone.birdlife.org/species/factsheet/tapajos-scythebill-campylorhamphus-probatus on 30/11/2024.
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 30/11/2024.