Host: Contopus cooperi (Olive-sided Flycatcher)
Host: Empidonax hammondii (Hammond's Flycatcher)
Host: Empidonax traillii (Willow Flycatcher)
Host: Myiarchus cinerascens (Ash-throated Flycatcher)
Host: Sayornis saya (Say's Phoebe)
Host: Tyrannus tyrannus (Eastern Kingbird)
Host: Tyrannus verticalis (Western Kingbird)