Red-billed Tyrannulet
VU

Red-billed Tyrannulet

Zimmerius cinereicapilla

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Red-billed_tyrannulet

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Red-billed Tyrannulet faces severe pressure from rapid deforestation across its restricted Andean range, with habitat conversion for agriculture and cattle ranching fragmenting the montane forests it depends upon. Climate change poses an additional threat by shifting suitable temperature and precipitation zones upslope, potentially reducing available habitat in already limited high-elevation areas. The species' small population size and restricted range make it particularly vulnerable to local extinctions from habitat disturbance.

Threat summary

Habitat

The Red-billed Tyrannulet inhabits humid montane forests and forest edges in the Andes, typically occurring at elevations between 1,500-2,800 meters. It prefers dense canopy areas with abundant epiphytes and shows a particular association with cloud forest environments where persistent moisture supports diverse insect populations.

Other threatened species in Tyrannidae

Rufous CasiornisVU

Rufous Casiornis

Casiornis rufus

Unknown
Fork-tailed Tody-tyrantVU

Fork-tailed Tody-tyrant

Hemitriccus furcatus

Unknown
Subtropical DoraditoVU

Subtropical Doradito

Pseudocolopteryx acutipennis

Unknown
Foothill ElaeniaVU

Foothill Elaenia

Myiopagis olallai

Unknown

Frequently asked questions

Why is Red-billed Tyrannulet classified as Vulnerable?
Red-billed Tyrannulet is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Red-billed Tyrannulet faces severe pressure from rapid deforestation across its restricted Andean range, with habitat conversion for agriculture and cattle ranching fragmenting the montane forests it depends upon. Climate change poses an additional threat by shifting suitable temperature and precipitation zones upslope, potentially reducing available habitat in already limited high-elevation areas. The species' small population size and restricted range make it particularly vulnerable to local extinctions from habitat disturbance.
Where does Red-billed Tyrannulet live?
Red-billed Tyrannulet occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Red-billed Tyrannulet?
The main threats to Red-billed Tyrannulet are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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