Eurasian river warbler / Schlagschwirl (Locustella fluviatilis)

Wikipedia: Eurasian river warbler Source: OTHER Flodsangare.jpg
Classification: Genus Locustella; Family Locustellidae
General: The river warbler (Locustella fluviatilis) is an Old World warbler in the grass warbler genus Locustella. It breeds in east and central Europe into the western Palearctic. It is migratory, wintering in inland southern Africa, from around the Zambezi River south to the vicinity of Pretoria in South Africa. The genus name Locustella is from Latin and is a diminutive of locusta, "grasshopper".^[2] This refers to the song of the common grasshopper warbler and some others in this genus.^[3] The specific fluviatilis is Latin for "of a river".^[2] [more]
Song: Song an insectlike, buzzing like Grasshopper and Savi's Warbler, but easily distinguished from those by it's distinct steam locomotive-like rhythm. About 8 accents per second. Perhaps easier to confuse with certain species of ground crickets or cicadas than it's congeners. [Link]
Calls: Contact call a sharp "tsikk-tsikk", similar to Savi's Warbler. [Link]
Physical details: length=13 cm, wingspan=19-22 cm, weight=15-19 g

🔍 No documented observation