The Spotted Flycatcher (Muscicapa striata) is a small, 5.5" (14cm) long-winged bird of bush and light woodland. A trait of this bird is that it flicks its wings nervously, when landing on its perch. It's an insect eater, hawking them from exposed branches and bushes. It's not named 'flycatcher for nothing, being very adept at catching flies, moths and butterflies in mid-air.
The Spotted Flycatcher is a common Palearctic migrant, seen from Oct-Apr, fairly widespread during its passage through Kenya, but most commonly winters in the Rift Valley highlands & SE Kenya, as far as the coast.
Interestingly, the Spotted Flycatcher is very adept at recognising its own eggs (many birds are not). It therefore is not subject to the parasitic Cuckoo, who lays eggs in other birds nests, for them to incubate.