Kretschmer's Longbill (Macrosphenus kretschmeri)

Kretschmer's Longbill Macrosphenus kretschmeri

Current view: Data table and detailed info

Taxonomy

Taxonomic note

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.
Dowsett, R. J.; Forbes-Watson, A. D. 1993. Checklist of birds of the Afrotropical and Malagasy regions. Tauraco Press, Li
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Species attributes

Migratory status	not a migrant	Forest dependency	high
Land-mass type		Average mass	20 g

Distribution

	Estimate	Data quality
Extent of Occurrence breeding/resident (km²)	456,000	medium
Severely fragmented?	no	-

Population and trend

	Value	Data quality	Derivation	Year of estimate
Number of mature individuals	unknown	not applicable	not applicable	0
Population trend	decreasing		suspected	-
Generation length (years)	3.6	-	-	-

Population justification: The global population size has not been quantified, but the species is described as common on Netia, Mozambique; otherwise uncommon to locally common (del Hoyo et al. 2006).

Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction (del Hoyo et al. 2006).

Country/territory distribution

Country/Territory	Presence	Origin	Breeding
Kenya	extant	native	yes
Mozambique	extant	native	yes
Tanzania	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Mozambique	Netia
Tanzania	Bagamoyo District Coastal Forests
Tanzania	Kisarawe District Coastal Forests
Tanzania	Rufiji District Coastal Forests
Tanzania	Kilwa District Coastal Forests
Tanzania	Lindi District Coastal Forests
Tanzania	Pangani District Coastal Forests
Tanzania	Udzungwa Mountains
Tanzania	East Usambara Mountains
Tanzania	West Usambara Mountains

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	0 - 1800 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2023) Species factsheet: Macrosphenus kretschmeri. Downloaded from http://datazone.birdlife.org/species/factsheet/kretschmers-longbill-macrosphenus-kretschmeri on 04/10/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 04/10/2023.