Data Zone
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 <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). 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 (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Population justification
The global population is suspected to number 5,000,000-49,999,999 mature individuals (Partners in Flight 2022). The species is described as one of the commonest forest hummingbirds in much of its range (del Hoyo et al. 1999, Stiles et al. 2020).
Trend justification
The species is undergoing a moderate decline (Partners in Flight 2022), which is thought to be caused by habitat destruction and fragmentation. Within the range, 7-9% of tree cover is lost over ten years (Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein). Even though the species is able to tolerate some forest degradation and fragmentation is it suffering from large-scale habitat loss (Stiles et al. 2020). Population declines are suspected to be roughly equivalent to the rate of tree cover loss and are here tentatively placed in the band 1-19% over ten years.
It occurs from Belize and Guatemala south through Central America to Venezuela, Ecuador and northern Peru.
It inhabits primary and tall secondary forest, forest edge as well as overgrown clearings, plantations and shady gardens (Stiles et al. 2020).
Despite its tolerance of a certain level of habitat degradation and disturbance, the species is threatened by large-scale deforestation within its range caused by and expansion of agriculture and livestock grazing (Stiles et al. 2020).
Text account compilers
Hermes, C.
Contributors
Butchart, S., Ekstrom, J., Symes, A. & Taylor, J.
Recommended citation
BirdLife International (2024) Species factsheet: Crowned Woodnymph Thalurania colombica. Downloaded from
https://datazone.birdlife.org/species/factsheet/crowned-woodnymph-thalurania-colombica on 22/11/2024.
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 22/11/2024.