Ye, the tetsi, worth the detour just to enjoy the experience. Like a wasp sting,and I counted 120 on my neck, face, and hands. They can fly up to 30kmh, at 25kmh and below they can perform acrobatics and land with precision.
ps. In Itigi theres one of those clean sheats, cool rooms and good food catholic missions to stay at, its on the road to Singidi, just out of town.
Have a good trip