[Feature] face pattern [Variegated Flycatcher] moustacial stripes wedge-shaped, starting to broaden almost immediately; dark mask narrow such that depth of mask below the eye less than half the depth of the eye [Piratic Flycatcher] 
moustacial stripes start narrow, flaring in lower half; dark mask broad such that depth of mask below the eye is about equal to the depth of the eye (or broader)