Very large group = 20+.
The common dwarf mongoose and Somali dwarf mongoose overlap in W Kenya, but I've never seen a Somali dwarf so am a little unsure of distinguishing marks in such a variable colored species. Dark color makes me lean common dwarf.
Somali ostrich. Not all groups considers a full species, but physical differences are apparent in this observation:
(1) blue-grey neck and legs
(2) bill and front of legs are pink