Large-billed Gerygone (Gerygone magnirostris) | Text

Large-billed Gerygone Gerygone magnirostris

Current view: Text account

Justification

Justification of Red List category
This species has a very 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 stable, 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 has not been quantified, but it is not believed to 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 size has not been quantified, but the species is reported to be locally common to very common in Papua New Guinea and locally quite common in Australia (Coates 1990, Flegg and Madge 1995).

Trend justification

The species is suspected to be stable in the absence of evidence for any declines or substantial threats.

Distribution and population

This species is widespread in the lowlands of New Guinea (Indonesia and Papua New Guinea), including satellite islands, and in northern and north-east Australia.

Ecology

The species inhabits mangroves and other riparian or littoral habitats in the lowlands.

Conservation actions

Acknowledgements

Text account compilers
Benstead, P., Gilroy, J., Hermes, C., Butchart, S., Bird, J., Symes, A.

Recommended citation
BirdLife International (2024) Species factsheet: Large-billed Gerygone Gerygone magnirostris. Downloaded from https://datazone.birdlife.org/species/factsheet/large-billed-gerygone-gerygone-magnirostris 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.