---
title: "Sterniczka australijska"
description: "Oxyura australis — Ptaki. The blue-billed duck (Oxyura australis) is a small Australian stiff-tailed duck, with both the male and female growing to a length of 40 cm (16 in)."
canonical: https://animalchecklist.com/pl/animal/blue-billed-duck
last_updated: 2026-09-20
---

# Sterniczka australijska

> Oxyura australis — Ptaki. The blue-billed duck (Oxyura australis) is a small Australian stiff-tailed duck, with both the male and female growing to a length of 40 cm (16 in).

- Scientific name: *Oxyura australis*
- Category: `birds` (Ptaki)
- Habitats: `freshwater` (Jeziora i rzeki)
- iNaturalist observations: 2907
- Wikidata: [Q783071](https://www.wikidata.org/wiki/Q783071)
- iNaturalist taxon: [7074](https://www.inaturalist.org/taxa/7074)

## Names

- en: Blue-billed Duck
- de: Schwarzkinn-Ruderente
- es: Malvasía australiana
- fr: Érismature australe
- nl: Australische stekelstaart
- pt: Marreca-de-bico-azul
- pl: Sterniczka australijska

## Countries with the most observations

AU (2835)

## Summary

The blue-billed duck (Oxyura australis) is a small Australian stiff-tailed duck, with both the male and female growing to a length of 40 cm (16 in). The male has a slate-blue bill which changes to bright-blue during the breeding season, hence the duck's common name. The male has deep chestnut plumage during breeding season, reverting to a dark grey. The female retains black plumage with brown tips all year round. The duck is endemic to Australia's temperate regions, inhabiting natural inland wetlands and also artificial wetlands, such as sewage ponds, in large numbers. It can be difficult to observe due to its cryptic…

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

## Photo

![Sterniczka australijska](https://animalchecklist.com/img/animals/blue-billed-duck/medium.jpg)

Photo: John Cull · CC0 · inaturalist — https://www.inaturalist.org/observations/197118252

## Machine access

`GET https://animalchecklist.com/api/v1/animals/blue-billed-duck?lang=pl` — see [openapi.json](https://animalchecklist.com/openapi.json).