We
were delighted to receive these pics of a nesting Black Eagle and one in flight
taken by Sue Goodman here on the Paardeberg. It’s not easy to catch these high
flying birds on camera, but we see them often wheeling above the farm. Our
latest house `Black Eagle’ is named for them because it’s from there, under the
mountain that they are most often seen. A sighting of them up in the thermals
is always thrilling
A bit about
them
Their proper name is the Verreaux's eagle and of
course they are large African birds of prey. Their preferred habitat is hilly
and mountainous terrain and they feed primarily on dassies (rock hyraxes) but
also on small mammals, birds and reptiles.
Recognising a
Verreaux’s Eagle
When perched or at rest adult Verreaux’s Eagles are
entirely black in appearance, except for a white ‘V’ above the wings on the
back and yellow feet/talons and cere (waxy layer covering the base of the upper
beak). In flight, the unfolded wings expose a white rump and whitish panels on
the outer wings. The wings have a distinctive shape that is broad in the
middle and tapering at the tips. Sexes are similar, but females are slightly
larger than males. Juveniles have a yellow-brown plumage and the head and back
of the neck have a distinctive reddish-brown colour. The face and throat are
black. Juveniles achieve adult plumage in 4 years.
Getting
around
Verreaux’s Eagles are often found in pairs, perched
on a prominent lookout or soaring and gliding around hilly and mountainous
terrain. The shape of their wings facilitates gliding up drafts created when
wind strikes mountain cliffs and this allows the birds to stay airborne for
long periods or travel great distances. Unlike other birds, they are able to
fly into strong winds and still maintain aerial control.
Sex and Life
cycles
Verreaux’s Eagles breed with one partner for their
entire life, and only replace a partner in the event of death. Often the pairs
can be observed perching, preening and flying together in perfect unison.
Mating takes place all year round and egg-laying season is between April
and July. Verreaux’s Eagles produce one to two eggs per clutch. Incubation
lasts 38–41 days and is done by the female while the male provides food. In
cases where two eggs are laid, the eggs usually hatch about four days apart.
The older chick will normally attack and harass the younger chick until it
dies. The surviving chick leaves the nest after 12 weeks and is forced out of the
territory by the parents.
Survival
The species is locally persecuted in southern
Africa where it coincides with livestock farms through poisoning and hunting.
However because Verreaux’s Eagles only take live prey and not carrion, and they
normally occur in rugged terrain that is not easily accessible, hunting and
poisoning have had minimal impact on population numbers. In areas where hyraxes
are hunted for food and skins, eagle populations have declined due to declining
prey populations. Possible future threats include habitat overlap with wind
farms that are likely to be placed windward of areas such as mountain ridges.
Enjoy these gorgeous and rare pics taken by Sue and
thanks Judy New for alerting us to their existence Sue can be found on Facebook
and her images can be Googled