Rufous twistwing 
Rufous-bellied bush tyrant 
Rufous-breasted chat-tyrant 
Rufous-breasted flycatcher 
Rufous-crowned tody-flycatcher 
Rufous-headed pygmy tyrant 
Rufous-naped ground tyrant 
Rufous-tailed Flatbill 
Rufous-tailed tyrant 
Rufous-winged tyrannulet 
Rusty-fronted Tody-flycatcher 
Rusty-margined flycatcher 
Santa Marta Bush-Tyrant 
Say's phoebe 
Scale-crested pygmy tyrant 
Scarlet flycatcher 
Scissor-tailed Flycatcher 
Sepia-capped flycatcher 
Short-crested flycatcher 
Short-tailed pygmy tyrant 
Sierran elaenia 
Slaty-backed chat-tyrant 
Slaty-capped flycatcher 
Slaty-headed tody-flycatcher