• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Justification of Red List category
This species has an extremely 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 'fairly common' (Stotz et al. 1996). This species is suspected to be declining locally owing to ongoing habitat loss and habitat degradation caused by widespread gold mining in the past (del Hoyo et al. 1999).

Trend justification
This species is suspected to be declining locally owing to ongoing habitat loss and habitat degradation caused by widespread gold mining in the past (del Hoyo et al. 1999).

This species has a large range in Venezuela, Colombia, Ecuador, Peru and Bolivia.

The species occurs from 900 up to 3000 m in a range of habitats including scrubland, clearings and gardens; it is sometimes found in grasslands and humid forest edge, but rarely in mature forest. Andean populations make seasonal altitudinal migrations (Schuchmann 1999).

Text account compilers
Rutherford, C.A.

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Recommended citation
BirdLife International (2024) Species factsheet: Long-tailed Sylph Aglaiocercus kingii. Downloaded from https://datazone.birdlife.org/species/factsheet/long-tailed-sylph-aglaiocercus-kingii on 18/12/2024.
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 18/12/2024.