Águila cabeza blanca vs common arm squid

Haliaeetus leucocephalus compared with Brachioteuthis riisei

Key Differences

• Águila cabeza blanca is Not Evaluated while common arm squid is Data Deficient.

Taxonomic Classification

Rank	Águila cabeza blanca	common arm squid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (cordados)	Mollusca (moluscos)
Class	Aves (Birds)	Cephalopoda (Cefalópodos)
Order	Accipitriformes (Hawks & Eagles)	Oegopsida (Oegopsida)
Family	Accipitridae (Hawks & Eagles)	Brachioteuthidae
Genus	Haliaeetus (Sea Eagles)	Brachioteuthis
Species	Haliaeetus leucocephalus	Brachioteuthis riisei

Evolutionary Relationship

Águila cabeza blanca and common arm squid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Águila cabeza blanca

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

common arm squid

DD — Data Deficient

Physical Characteristics

Attribute	Águila cabeza blanca	common arm squid
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

Águila cabeza blanca

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 10 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (8 countries), North America (United States), and South America (Ecuador).

common arm squid

Habitat

Native to Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Chile and Norway.

Águila cabeza blanca

El ave nacional de los Estados Unidos y símbolo del éxito conservacionista americano, el águila cabeza blanca tiene una envergadura de hasta 2,4 metros y habita bosques y humedales próximos a aguas abiertas en toda Norteamérica. Casi extinta en la década de 1960 por el envenenamiento con DDT y la caza, se recuperó de forma notable gracias a las prohibiciones de pesticidas y la Ley de Especies en Peligro.

common arm squid

<em>Brachioteuthis riisei</em>, commonly known as the Common Arm Squid, is a cephalopod mollusk in the family Brachioteuthidae. This species is classified as Data Deficient on the IUCN Red List, reflecting significant gaps in knowledge about its population size, ecology, and distribution. Records of this species have been reported from waters off Chile and Norway, suggesting a broad oceanic distribution. Common Arm Squids are typically mesopelagic or bathypelagic organisms, inhabiting the open ocean at considerable depths during the day and often migrating toward shallower waters at night to feed. Like other oceanic squids, they are likely important components of marine food webs, serving as both predators of small fish and invertebrates and as prey for larger marine predators such as cetaceans and seabirds. The Data Deficient listing underscores the need for additional research into the biology, population dynamics, and conservation requirements of this understudied species. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway