Data Zone
Justification of Red List category
This species formerly occurred on Guam, but became Extinct in 1983. Predation by the introduced brown tree snake was the cause of its extinction.
Population justification
No extant population remains.
Trend justification
The species was once common on Guam, but it became restricted to the northern plateau by the 1970s (Jenkins 1983, Hume 2017). However, it plummeted to extinction (Collar et al. 1994) in 1983, when the last individual was captured for potential captive propagation (Jaffe 1997, Hume 2017). No other birds could be found however and the last individual died in captivity the following year (Hume 2017).
Myiagra freycineti was endemic to Guam (to USA), where it was once common but restricted to the northern plateau by the 1970s (Jenkins 1983, Hume 2017).
It inhabited forest.
Its rapid decline to extinction was due to the depredations of introduced brown tree snake Boiga irregularis (Savidge 1987).
Text account compilers
Vine, J.
Recommended citation
BirdLife International (2024) Species factsheet: Guam Flycatcher Myiagra freycineti. Downloaded from
https://datazone.birdlife.org/species/factsheet/guam-flycatcher-myiagra-freycineti on 23/11/2024.
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 23/11/2024.