---
title: "Oostelijke bruine kiekendief"
description: "Circus spilonotus — Vogels. The eastern marsh harrier (Circus spilonotus) is a bird of prey belonging to the marsh harrier group of harriers."
canonical: https://animalchecklist.com/nl/animal/eastern-marsh-harrier
last_updated: 2026-09-20
---

# Oostelijke bruine kiekendief

> Circus spilonotus — Vogels. The eastern marsh harrier (Circus spilonotus) is a bird of prey belonging to the marsh harrier group of harriers.

- Scientific name: *Circus spilonotus*
- Category: `birds` (Vogels)
- Habitats: `freshwater` (Meren en rivieren)
- iNaturalist observations: 2774
- Wikidata: [Q1269372](https://www.wikidata.org/wiki/Q1269372)
- iNaturalist taxon: [979659](https://www.inaturalist.org/taxa/979659)

## Names

- en: Eastern Marsh Harrier
- de: Mangroveweihe
- es: Aguilucho lagunero oriental
- fr: Busard d'Orient
- nl: Oostelijke bruine kiekendief
- pt: Tartaranhão-dos-pauis-asiático
- pl: Błotniak wschodni

## Countries with the most observations

CN (607), RU (521), TH (320), TW (242), HK (195), JP (111), MY (97), IN (70), MN (60), KR (38), SG (35), VN (27)

## Summary

The eastern marsh harrier (Circus spilonotus) is a bird of prey belonging to the marsh harrier group of harriers. It was previously considered to be conspecific with the western marsh harrier (Circus aeruginosus) but is now usually classified as a separate species. It has two subspecies: C. s. spilonotus in eastern Asia and C. s. spilothorax (Papuan harrier, perhaps a separate species) in New Guinea.

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

## Photo

![Oostelijke bruine kiekendief](https://animalchecklist.com/img/animals/eastern-marsh-harrier/medium.jpg)

Photo: steve b · CC0 · inaturalist — https://www.inaturalist.org/observations/375832815

## Machine access

`GET https://animalchecklist.com/api/v1/animals/eastern-marsh-harrier?lang=nl` — see [openapi.json](https://animalchecklist.com/openapi.json).