) or Black Eagle
, not to be confused with the Asian Black Eagle Ictinaetus malayensis
Black Eagles live in hilly and mountainous regions of southern and eastern Africa (extending marginally into Chad), and very locally in West Africa, the Arabian Peninsula and the southern Middle East. It is one of the most specialised species concerning prey – the rock hyrax. If this prey is scarce, they may survive with mixed success on other prey like small antelopes, gamebirds, hares, monkes and other vertebrates.
They are very large eagles, 75 to 96 cm from bill to tail, males weigh 3 to 4,2 kg, females 3,1 to 5,8 kg, wingspan is 1,80 to 2,30 m. Except for a slight difference in size females and males show no physical difference. Adult birds are mostly jet-black. Cere is yellow, bill is grey, eye-ring and "brows" are yellow. On flying birds seen from above is white on back, rump and upper-tail coverts and part of the scapulars, which forms a V-shaped patch, although this feature is partially obscured in perched birds. Adults also have conspicuous white windows on the wing quills at the carpal joint (at the base of the primaries) when seen flying both from above and below.
Generally, like in most aquila eagles, two eggs are laid (range from one to three are known), laid at a three day interval. Both birds are incubating with the female taking the major share, for 43 to 47 days, starting with it immediately after laying which makes hatching happen 2-3 days apart. One egg is sometimes infertile, second egg tends to be 10% smaller.
Black Eagles are considered "obligate cainists", meaning the older sibling kills the younger one (in more than 90% of observed nests) by either starvation or direct attacks. Aggression may continue for up to 70 days after hatching! Fledging happens regionally different between 90 to 99 days after hatching.(copyright Africam)
Black Eagles were studied extensively by Valerie Gargett (links and references for publications can be found here: viewtopic.php?f=53&t=590
For more facts please look at the Wikipedia article http://en.wikipedia.org/wiki/Verreaux%27s_Eagle
from where I have taken the important facts and numbers.
This LIVE camera is dedicated to broadcasting the wild Black Eagles of Roodekrans from Johannesburg, South Africa. This latest conservation project focuses on the ambitious task of capturing the breeding cycle of the black eagles as they attempt to raise a new chick. What makes it so ambitious is that the nest of this particular pair of eagles is embedded into the sheer rock face of a 50 metre (164 feet) high cliff. To bring the story to people’s computer screens would require not only the use of some ground breaking technology but also an installation team complete with avid and experienced rock climbers.
The female eagle is called Emoyeni
(upon the wind) and is estimated to be between 35 and 40 years old and has reared since beeing sighted from the early 1970 a number of offspring.
The male eagle Thulane
(the shy one) is much younger and replaced the former mate that vanished in 1998.
The pair has built a number of nesting sites on the cliff face over the years.
More on the eagles and the project:http://www.blackeagles.co.za/
For Black Eagle calls:http://macaulaylibrary.org/search?taxon=Aquila%20verreauxii&taxon_id=11993344&taxon_rank_id=67&tab=audio