Volcano Junco Junco vulcani

  • Order: Passeriformes
  • Family: Passerellidae
  • Monotypic
  • Authors: Birk L. Nielsen and David L. Slager



Volcano Junco is primarily terrestrial, although it ascends up to 10 m above the ground in shrubs and low tangles (Slud 1964, Stiles and Skutch 1989). On the ground, it advances both by running and hopping; its flight is heavy and fluttering, and it rarely flies far (Slud 1964, Stiles and Skutch 1989).


Volcano Junco probably is territorial, but there is no information on territoriality in this species, or on territory or home range size.

Sexual Behavior

There is very little information on sexual behavior of Volcano Junco, but it often is seen in pairs (Stiles and Skutch 1989), and so presumably is socially monogamous.

Social and interspecific behavior

Volcano Junco usually is solitary or in pairs, or in small family groups of up to four individuals (Slud 1964, Stiles and Skutch 1989). Apparently does not associate with mixed species flocks.


No reports of predation on Volcano Junco?

Recommended Citation

Nielsen, B. L. and D. L. Slager (2019). Volcano Junco (Junco vulcani), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.voljun1.01