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Saturday, 26 October 2019

23-10-2019 BIOPARC, VALENCIA - AFRICAN FISH EAGLE (Haliaeetus vocifer)


The African Fish Eagle is a striking raptor, known for its white head/chest, brown body, black wings, and loud "voice of Africa" call, feeding primarily on fish snatched with powerful talons featuring rough pads (spicules) for grip; females are larger, they mate for life near water, and are national symbols for several countries. 

Key Characteristics

Appearance: White head, neck, chest, and tail, contrasting with a dark brown body and black wings. Adults have a bright yellow, featherless face, dark brown eyes, and a hooked yellow beak with a black tip.
Size: A large raptor, with females weighing more (up to 3.6 kg) and having larger wingspans (up to 2.4m) than males (up to 2.5 kg, ~2m wingspan).
Juveniles: Brown and mottled, taking about four years to develop adult plumage. 


Hunting & Diet

Specialized Feet: Rough soles and sharp talons (spicules) help them grip slippery fish.
Hunting Style: Perch high in trees, spot fish, then swoop down to snatch them from the water.
Opportunistic: Also steal food from other birds (kleptoparasitism). 

Habitat & Behavior
Habitat: Found near freshwater bodies like lakes, rivers, and wetlands in Africa.
Social Life: Live and hunt in monogamous pairs, defending territories.
Nesting: Build large nests, adding to them yearly. 


Cultural Significance

Iconic Call: Its distinctive, loud cry is famous and often heard near African waters.
National Symbol: The national bird of Zambia, Zimbabwe, and South Sudan, symbolizing freedom. 


Geographic Range

The eagle's range extends from Mauritania, Mali, and Sudan in the north, to South Africa in the south, encompassing latitudes between approximately 17°N and 35°S. 
Widespread Presence: The species is a resident in most African countries south of the Sahara Desert.
Key Population Areas: Populations are particularly abundant around the large Rift Valley lakes in East and Central Africa, such as Lake Victoria and Lake Naivasha, as well as major river systems like the Orange, Chobe, and Zambezi rivers.
Absence: They are generally absent from extremely arid desert areas with little surface water and dense, closed-canopy equatorial rainforests. 


Habitat

The African fish eagle is a generalist when it comes to habitat type, provided its core needs of water, food, and perches are met. Habitats include: 
Freshwater lakes, rivers, reservoirs, and swamps.
Coastal areas, including estuaries, lagoons, and mangrove swamps, though they primarily hunt in fresh or brackish water.
Various biomes, ranging from grasslands and fynbos to tropical rainforests and desert-bordering coastlines. 
While adults are largely sedentary and maintain territories year-round, some local movements may occur in response to seasonal changes in water levels or food supply.