---
title: "Aguja rdzawogrzbieta"
description: "Geranoaetus polyosoma — Ptaki. The variable hawk (Geranoaetus polyosoma) is a polymorphic species of bird of prey in the family Accipitridae."
canonical: https://animalchecklist.com/pl/animal/variable-hawk
last_updated: 2026-09-20
---

# Aguja rdzawogrzbieta

> Geranoaetus polyosoma — Ptaki. The variable hawk (Geranoaetus polyosoma) is a polymorphic species of bird of prey in the family Accipitridae.

- Scientific name: *Geranoaetus polyosoma*
- Category: `birds` (Ptaki)
- Habitats: `grassland` (Łąki i pola)
- iNaturalist observations: 6474
- Wikidata: [Q1576679](https://www.wikidata.org/wiki/Q1576679)
- iNaturalist taxon: [201044](https://www.inaturalist.org/taxa/201044)

## Names

- en: Variable Hawk
- de: Punabussard
- es: Aguilucho
- fr: Buse tricolore
- it: Buteo polyosoma
- nl: Roodrugbuizerd
- pt: Buteo poecilochrous
- pl: Aguja rdzawogrzbieta

## Countries with the most observations

AR (2347), CL (1953), EC (679), PE (529), BO (332), FK (55), CO (15)

## Summary

The variable hawk (Geranoaetus polyosoma) is a polymorphic species of bird of prey in the family Accipitridae.
It is widespread and often common in open habitats in western and southern South America, including the Falkland Islands. Its taxonomy is disputed, with some splitting it into the widespread red-backed hawk (G. polyosoma) and the Puna hawk or Gurney's hawk (G. poecilochrous) of the central and north Andean highlands, but the differences between the two are unclear. Most recent authorities have supported the lumping together of the two hawks although the issue still is controversial. On the contrary, the rare…

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

## Photo

![Aguja rdzawogrzbieta](https://animalchecklist.com/img/animals/variable-hawk/medium.jpg)

Photo: Tiago Lubiana · CC0 · inaturalist — https://www.inaturalist.org/observations/225650771

## Machine access

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