Mistletoe Tyrannulet Zimmerius parvus

  • Order: Passeriformes
  • Family: Tyrannidae
  • Monotypic
  • Authors: Andrew W. Jones

Sounds and Vocal Behavior


Mistletoe Tyrannulet gives a plaintive, monotonous call throughout the day, and may string these calls together into a song. This call typically is transcribed as pyeer or pyeeu, though there is variation and the call may be a two-syllabled peeyup. Both sexes apparently give these calls. The dawn song (presumably given only by males) consists of a series of notes, the first a slow, dropping syllable and the rest short and rising. Skutch (1960) described this song as yer-de-dee, often followed by a trill.

Skutch (1997) indicated that the Mistletoe Tyrannulet's dawn singing bout is longer than that of any other tyrannid in Costa Rica. He also briefly mentions a "song" given at the nest by the female just before a brooding bout, which he described as only a soft murmur with a very low volume.

Additional audio recordings of vocalizations of Mistletoe Tyrannulet can be heard at Macaulay Library and at xeno-canto.

Nonvocal Sounds

None reported.

Recommended Citation

Jones, A. W. (2018). Mistletoe Tyrannulet (Zimmerius parvus), version 2.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.paltyr3.02