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). The population trend appears to be increasing, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is very 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.
The global population is estimated at over 500,000 mature individuals (Partners in Flight 2019) and stable or increasing (Partners in Flight 2020, Wetlands International 2020).
The population is considered to be increasing. In North America, from 1966 to 2017 the species has increased on average by 10% over three generations (Partners in Flight 2019). Populations elsewhere within the range are suspected to be stable (Wetlands International 2020).
Text account compilers
Butchart, S., Hermes, C., Ekstrom, J., Westrip, J.R.S.
BirdLife International (2022) Species factsheet: Podilymbus podiceps. Downloaded from http://www.birdlife.org on 28/06/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/06/2022.