Morphnus guianensis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Morphnus guianensis
Species Authority: (Daudin, 1800)
Common Name(s):
English Crested Eagle, Guianan Crested Eagle
Spanish Aguila Crestada, Aguila Monera, Arpía Menor

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Benstead, P., Capper, D., Sharpe, C J, Symes, A., Temple, H.
This species is rare throughout its vast range, and is thought to be declining moderately rapidly owing to habitat loss and hunting. For this reason it is classified as Near Threatened.

Geographic Range [top]

Range Description: Morphnus guianensis is sparsely distributed throughout its extensive range from Guatemala through Belize, Honduras, Nicaragua, Costa Rica, Panama, Colombia, Venezuela, Guyana, Suriname, French Guiana, Brazil, and east Andean Ecuador, Peru, Paraguay and Bolivia to north Argentina (Bierregaard 1994a, Bierregaard et al. 1995, Guyra Paraguay 2004).

Argentina; Belize; Bolivia, Plurinational States of; Brazil; Colombia; Costa Rica; Ecuador; French Guiana; Guatemala; Guyana; Honduras; Mexico; Nicaragua; Panama; Paraguay; Peru; Suriname; Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population is estimated to number 1,000-10,000 individuals, roughly equating to 670-6,700 mature individuals.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It occurs in lowland tropical and subtropical forest, including gallery forest in the south of its range, typically below 600 m but locally up to 1,200 m (Bierregaard 1994a, Parker et al. 1996).

Systems: Terrestrial

Threats [top]

Major Threat(s): Its large size and low population densities make it particularly vulnerable to hunting (Bierregaard 1994a, Bierregaard et al. 1995). Deforestation is a severe problem, with many old records from now deforested parts of the Chocó region in north-west Colombia (Bierregaard 1994a, Bierregaard et al. 1995). Similarly extensive deforestation in parts of its Central American range suggest that local contractions of range or serious declines in population have already occurred (Bierregaard 1994a, Bierregaard et al. 1995). It presumably also suffers from competition with humans for prey (Galetti et al. 1997b).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
CITES Appendix II.

Conservation Actions Proposed
Survey and attempt to estimate population density and global population. Organise educational campaigns to reduce hunting pressure. Study its ability to persist in fragmented and degraded habitat.

Citation: BirdLife International 2012. Morphnus guianensis. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 28 August 2015.
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