A very large bird no sure if it was an eagle or vulture
No interactions present.
An intermittent stage of plumage I think, a subadult.
It definately is not like any of the Palm Nut Vultures I've seen as it lacks the orange facial skin and it is the wrong shape
Shape wise I have no issues with – indeed it looks every inch G. angolensis. As far as plumage is concerned the books often tend to show juvenile (all over brown/black) or adult (the classic black primaries and secondaries, rest white with bare facial skin quite a vivid red) however the bird does not develop the full adult plumage until the sixth year. Between juvenile and full adult there are several subadult phases; in this photo the tail feathers are white tipped and the facial skin is just starting to turn pink which are indicative of a second-year bird.
The facial skin is red in the juveniles as well as the adults - the bird simply does not look like any of the palm nut vultures I have seen in Africa
“Adult bare face-sides red or orange-red, juvenile yellow-grey or brownish-yellow, turning flesh and then yellow by third or fourth year.”
James Ferguson-Lees and David A Christie. Raptors of the World. Helm. 2001. p412
I too have travelled extensively in E. Africa, sadly not since the late 1990s, and seen very few subadult birds whilst there; they look so unlike the striking full adult I suspect we overlook many.
Lat/Lng: -0.5968, 31.0106