• 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. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2021	Least Concern
2018	Least Concern
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

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,800,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	5100000 mature individuals	medium	inferred	2019
Population trend	decreasing	-	suspected	-
Generation length	2.2 years	-	-	-

Population justification: The global population is inferred to number 5,100,000 mature individuals (Partners in Flight 2019).

Trend justification: The species has been undergoing a large, significant decline at an average rate of 1.5% per year between 1970 and 2017 (Partners in Flight 2019). Short-term trends however suggest that the population has been stable or increasing over the past ten years (Pardieck et al. 2018). This may be because end years have a disproportionate affect on analyses, and the data shows an extremely rapid increase in 2014 and 2015. The overall, general trend does, however, appear to be a decline; and so the trend is precautionarily retained as such.

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

Country/Territory	IBA Name
Mexico	Sierra Maderas del Carmen

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Grassland	Temperate	major	resident
Shrubland	Subtropical/Tropical Dry	major	resident
Altitude	800 - 2100 m	Occasional altitudinal limits

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	international
Sport hunting/specimen collecting	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: Scaled Quail Callipepla squamata. Downloaded from https://datazone.birdlife.org/species/factsheet/scaled-quail-callipepla-squamata 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.