Crested Eagle Morphnus guianensis


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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2017 Near Threatened A3cd+4cd
2016 Near Threatened A2cd+3cd+4cd
2012 Near Threatened A2cd+3cd+4cd
2008 Near Threatened A2c,d; A3c,d; A4c,d
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 15,600,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 0
Population trend Decreasing poor suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 25-29 - - -
Decline (10 years/3 generation past and future) 25-29 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 18 - - -

Population justification: The global population size has not been estimated, but it has been described as sparsely distributed in the south of its range (Bierregaard and Kirwan 2017), and the population density of Tikal National Park in Guatemala has been estimated at 2-4 individuals per 100 km2 (Whitacre et al. 2012).

Trend justification: Deforestation rates presented by Tracewski et al. (2016) suggest that the species has lost c.16.5% of suitable habitat over the past 3 generations (54 years). However, the species is suspected to lose 29.8-47% of suitable habitat within its distribution over three generations based on a model of Amazonian deforestation (Soares-Filho et al. 2006, Bird et al. 2011), though the rate of loss outside Amazonia is likely to be lower (A. Lees in litt. 2011), and so the species is therefore suspected to undergo an ongoing and future decline of 25-29% over three generations.

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant Yes
Belize N Extant Yes
Bolivia N Extant Yes
Brazil N Extant Yes
Colombia N Extant Yes
Costa Rica N Extant Yes
Ecuador N Extant Yes
French Guiana N Extant Yes
Guatemala N Extant Yes
Guyana N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes
Nicaragua N Extant Yes
Panama N Extant Yes
Paraguay N Extant Yes
Peru N Extant Yes
Suriname N Extant Yes
Venezuela N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Bolivia Noel Kempff Mercado
Bolivia Reserva de Inmovilización Iténez
Colombia Parque Nacional Natural Amacayacu
Colombia Serranía de los Churumbelos
Ecuador Territorio Achuar
Peru Jeberos
Peru Manu
Peru Parque Nacional Cordillera Azul
Peru Reserva Nacional Pacaya Samiria
Peru Río Orosa
Venezuela Parque Nacional Canaima
Venezuela Henri Pittier National Park (Parque Nacional Henri Pittier IBA)
Venezuela Reserva Forestal Imataca
Venezuela Parque Nacional Parima-Tapirapecó
Venezuela Zona Protectora San Rafael de Guasare
Peru Los Amigos
Bolivia KAA-IYA del Gran Chaco
Colombia Parque Nacional Natural Ensenada de Utría
Ecuador Reserva de Producción Faunística Cuyabeno
Ecuador Bajo Napo
Ecuador Gran Yasuní
Panama Narganá Wildlands Area
Panama Darién National Park
Costa Rica Arenal-Monteverde
Costa Rica Cahuita, Gandoca-Manzanillo and Migratory Bird Corridor
Costa Rica Fila Costeña
Costa Rica Sierpe Wetlands and Osa Peninsula
Costa Rica Central Volcanic Cordillera
Nicaragua Prinzapolka/Alamikamba Rivers
Costa Rica La Amistad Caribe
Costa Rica Caribbean lowlands and wetlands
Costa Rica Los Santos, La Amistad Pacífico
Costa Rica Pacuare, coastal wetlands and Migratory Bird Corridor
Costa Rica Tilarán Highlands
Nicaragua Bosawas
Nicaragua Indio Maíz
Nicaragua Los Guatuzos
Argentina Parque Provincial Piñalito y alrededores
Nicaragua San Juan River - La Inmaculada Concepcion de Maria
Belize Rio Bravo CMA Gallon Jug Estate
Brazil Serra dos Carajás
Brazil Arquipélago de Anavilhanas
Brazil Gurupi
Brazil Rio Capim
Brazil Cristalino / Serra do Cachimbo
Brazil Ji-Paraná / Roosevelt
Brazil Campinas e Várzeas do Rio Branco
Brazil Sooretama / Linhares
Brazil Baixo Rio Xingu
Brazil Caxiuanã / Portel
Brazil Maciço Florestal de Paranapiacaba
Brazil Guaraqueçaba / Jacupiranga / Cananéia
Honduras Rio Platano
Honduras Tawahka
Honduras Parque Nacional Patuca
Suriname Bakhuys mountains
Honduras Sierra de Agalta
Suriname Centraal Suriname Nature Reserve (CSNR)
Suriname Grensgebergte/Toemoek-hoemak
Suriname Kabalebo / Arapahu
Bolivia Reserva Forestal Alto Paraguá
Brazil Área de Relevante Interesse Ecológico Projeto Dinâmica Biológica de Fragmentos Florestais e Entorno
Brazil Reserva Biológica do Rio Trombetas
French Guiana Parc Amazonien de Guyane et Saül
French Guiana Nouragues
French Guiana Trinité
Peru Bahuaja-Sonene
Guyana Rewa River North Rupununi
Colombia Paramillo Natural National Park

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 1200 m Occasional altitudinal limits (max) 1600 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Ecosystem degradation
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5

Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Morphnus guianensis. Downloaded from http://www.birdlife.org on 19/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 19/08/2022.