Western marsh harrier / Rohrweihe (Circus aeruginosus)

Rohrweihe - aah, what's the English name? Western marsh harrier. 2025-04-21 14:16:56 Fanel/Chablais de Cudrefin und La Sauge Canon EOS R7 200-800mm Shutter speed 9
ISO 250
Exposure 1/500

Observations

First documented observation: 2022-05-21 in Switzerland. Most recent observation: 2025-04-21 in Fanel/Chablais de Cudrefin und La Sauge.

Description

Classification: Genus Harriers (Circus); Subfamily True hawks (Accipitrinae); Family Accipitridae (Accipitridae)
General:The western marsh harrier (Circus aeruginosus) is a large harrier, a bird of prey from temperate and subtropical western Eurasia and adjacent Africa. It is also known as the Eurasian marsh harrier. The genus name Circus is derived from the Ancient Greek kirkos, referring to a bird of prey named for its circling flight (kirkos, "circle"), probably the hen harrier. The specific aeruginosus is Latin for "rusty".^[3] [more]

Seasonal behavior

Year-round bird
Migration in: 03-12 - 06-09
Migration out: 07-29 - 10-27
More details at Vogelwarte.ch

Other Details

Physical details

Physical details: length=48-56 cm, wingspan=115-130 cm, weight=405-800 g
Habitats: Agricultural

Vocalisation

Song: Automatically generated from Xeno-Canto recording.
Song attributes: Frequency:
XC884134 - Western Marsh Harrier - Circus äruginosus - whooping, swooping call.
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Calls: Calls:Call: A sharp "kwii-uuu" of about a seconds length, rapidly ascending in pitch, and ending on a falling tone. [Link] Automatically generated from Xeno-Canto recording.

Call attributes: song Frequency: ,