Long-billed Murrelet (Brachyramphus perdix) | Details

Long-billed Murrelet Brachyramphus perdix

Current view: Data table and detailed info

Taxonomy

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2018	Near Threatened	A2c+3c+4c
2016	Near Threatened	A2c+3c+4c
2012	Near Threatened	A2c+3c+4c
2010	Near Threatened	A2c; A3c; A4c; C1
2008	Near Threatened	A2c,c; C1
2004	Near Threatened
2000	Lower Risk/Least Concern
1994	Not Recognised
1988	Not Recognised

Species attributes

Migratory status	not a migrant	Forest dependency	high
Land-mass type	shelf island continent	Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	3,120,000 km²	medium
Extent of Occurrence (non-breeding)	912,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	poor	suspected	1995
Population trend	decreasing	poor	suspected	1998-2034
Rate of change over the past 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Generation length	12.1 years	-	-	-

Population justification: The global population size has not been accurately quantified, however it is said to number in the 'tens of thousands' (Konyukhov and Kitaysky 1995). The population in Russia has been estimated at <100,000 breeding pairs and <1,000 individuals on migration (Brazil 2009).

Trend justification: There is no information on the population trend, however logging is likely to be driving a moderately rapid decline in this species.

Country/territory distribution

Country/Territory	Presence	Origin	Breeding visitor	Non-breeding visitor
China (mainland)	extant	native		yes
Japan	extant	native	yes
North Korea	extant	native		yes
Russia	extant	native	yes
Russia (Asian)	extant	native	yes
South Korea	extant	native		yes
Switzerland	extant	vagrant		yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Russia (Asian)	Kronotskiy Gulf
Russia (Asian)	North-east Sakhalin lagoons
Russia (Asian)	Schast'ya Gulf
Russia (Asian)	Shantarskiye Islands

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Boreal	major	breeding
Forest	Temperate	major	breeding
Marine Coastal/Supratidal	Coastal Brackish/Saline Lagoons/Marine Lakes	suitable	resident
Marine Neritic	Macroalgal/Kelp	major	resident
Marine Neritic	Pelagic	suitable	resident
Marine Neritic	Seagrass (Submerged)	major	resident
Marine Neritic	Subtidal Loose Rock/pebble/gravel	major	resident
Marine Neritic	Subtidal Rock and Rocky Reefs	major	resident
Marine Neritic	Subtidal Sandy	major	resident
Marine Neritic	Subtidal Sandy-Mud	major	resident
Marine Oceanic	Epipelagic (0-200m)	suitable	non-breeding
Marine Oceanic	Mesopelagic (200-1000m)	suitable	non-breeding
Altitude		Occasional altitudinal limits

Threats & impact

Threat (level 1)

Threat (level 2)

Impact and Stresses

Biological resource use

Fishing & harvesting aquatic resources - Unintentional effects: (large scale) [harvest]

Timing

Scope

Severity

Impact

Ongoing

Minority (<50%)

Slow, Significant Declines

Low Impact: 5

Stresses
Species mortality

Biological resource use

Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]

Timing

Scope

Severity

Impact

Ongoing

Minority (<50%)

Slow, Significant Declines

Low Impact: 5

Stresses
Ecosystem degradation

Pollution

Industrial & military effluents - Oil spills

Timing

Scope

Severity

Impact

Ongoing

Minority (<50%)

Slow, Significant Declines

Low Impact: 5

Stresses
Ecosystem degradation, Reduced reproductive success, Species mortality

Recommended citation
BirdLife International (2024) Species factsheet: Long-billed Murrelet Brachyramphus perdix. Downloaded from https://datazone.birdlife.org/species/factsheet/long-billed-murrelet-brachyramphus-perdix on 23/12/2024.
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 23/12/2024.