Quite right, Andy, however the Geladas are at a birding spot anyway.
I'm sure we can sort out an itinerary which gets us most of both without anyone feeling they've lost out.
Personally, I'd like to see birds & mammals, but I'm not that bothered, e.g., to travel a hundred miles for a single endem.
I'll put some thoughts on here soon, and KK, if you could let me know what would be your priorities, then a route to suit will emerge.
All the best,
Known to follow bird waves.