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

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
A2be+4be; B1ab(ii,v); C2a(i,ii); D	A2be+4be; B1ab(ii,v); C2a(i,ii); D	A2be+4be; B1ab(ii,v); C1+2a(i,ii); D1+2

Red List history

Year	Category	Criteria
2018	Critically Endangered	A2be+4be; B1ab(ii,v); C2a(i,ii); D
2016	Critically Endangered	A2be+4be;B1ab(ii,v);C2a(i,ii);D
2015	Critically Endangered	A2be+4be;B1ab(ii,v);C2a(i,ii);D
2013	Critically Endangered	A2be+4be;B1ab(ii,v);C2a(i,ii);D
2012	Critically Endangered	A2be+4be;B1ab(ii,v);C2a(i,ii);D
2011	Critically Endangered	A2b,e; A4b,e; B1a+b(v); C2a(ii)
2009	Critically Endangered	B1a+b(v)
2008	Critically Endangered
2004	Critically Endangered
2000	Critically Endangered
1996	Vulnerable
1994	Vulnerable
1988	Threatened

Migratory status	not a migrant	Forest dependency	medium
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	97 km2	medium
Number of locations	1	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	33 mature individuals	good	estimated	2012
Population trend	decreasing	good	inferred	2000-2021
Rate of change over the past 10 years/3 generations (longer of the two periods)	80-100%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	80-100%	-	-	-
Generation length	6.9 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population was estimated to number 67 individuals in 2009 (T. Ghestemme in litt. 2010). Based on a 30% decline in territories since this estimate, it is now thought to number c. 50 birds, roughly equivalent to 33 mature individuals (T. Ghestemme in litt. 2012).

Trend justification: In February 2000 the total population was estimated at a few hundred pairs (Thibault and Meyer 2001, Gouni 2006), but by 2011 the total population was estimated to have fallen to as low as 50 individuals (Anon. 2010, T. Ghestemme in litt. 2010, 2012). Since the first observation of Black Rats Rattus rattus on Fatu Hiva in 2000 there has been an extremely rapid population decline equating to over 90% over three generations (21 years). Recent predator control has reduced the rate of territory loss from 60% in 2007-2009, to 30% in 2009-2011 (Ghestemme 2012). Between 2010 and 2012, the population started to increase slowly, with the number of adult individuals in protected areas increasing from 27 to 36 (Ghestemme 2013).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
French Polynesia	extant	native	yes

Country/Territory	IBA Name
French Polynesia	Fatu Hiva

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Shrubland	Subtropical/Tropical Moist	major	resident
Altitude	50 - 775 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Reduced reproductive success
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Felis catus	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Rapid Declines		High Impact: 8
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Rattus rattus	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Rapid Declines		High Impact: 8
		Stresses Reduced reproductive success
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Reduced reproductive success

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Recommended citation
BirdLife International (2024) Species factsheet: Fatu Hiva Monarch Pomarea whitneyi. Downloaded from https://datazone.birdlife.org/species/factsheet/fatu-hiva-monarch-pomarea-whitneyi 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.