---
title: "Southern Beardless-Tyrannulet"
description: "Camptostoma obsoletum — Birds. The southern beardless tyrannulet (Camptostoma obsoletum) is a small passerine bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers."
canonical: https://animalchecklist.com/animal/southern-beardless-tyrannulet
last_updated: 2026-09-20
---

# Southern Beardless-Tyrannulet

> Camptostoma obsoletum — Birds. The southern beardless tyrannulet (Camptostoma obsoletum) is a small passerine bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers.

- Scientific name: *Camptostoma obsoletum*
- Category: `birds` (Birds)
- Habitats: `forest` (Forest)
- iNaturalist observations: 4794
- Wikidata: [Q857875](https://www.wikidata.org/wiki/Q857875)
- iNaturalist taxon: [16972](https://www.inaturalist.org/taxa/16972)

## Names

- en: Southern Beardless-Tyrannulet
- de: Gelbkehlfliegenstecher
- es: Mosquerito silbador
- fr: Tyranneau passegris
- pt: Risadinha
- pl: Koszykotyranik czubaty

## Countries with the most observations

BR (1544), AR (600), PE (369), EC (365), PA (235), CO (146), VE (52), UY (43), BO (39), GF (37), CR (27), PY (18)

## Summary

The southern beardless tyrannulet (Camptostoma obsoletum) is a small passerine bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Costa Rica, Panama, in every mainland South American country except Chile, and on Trinidad.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Southern_beardless_tyrannulet

## Photo

![Southern Beardless-Tyrannulet](https://animalchecklist.com/img/animals/southern-beardless-tyrannulet/medium.jpg)

Photo: Frank Thomas Sautter · CC0 · inaturalist — https://www.inaturalist.org/observations/316152812

## Machine access

`GET https://animalchecklist.com/api/v1/animals/southern-beardless-tyrannulet?lang=en` — see [openapi.json](https://animalchecklist.com/openapi.json).