Porzana porzana
Small, secretive bird, usually only heard and not seen. Buff under tail-coverts and zigzag-patterned wings are diagnostic, and separates it from all other small rails in the region except American migrant Sora. Stocky build, with speckled underparts and short yellow bill with red spot at upper base.
Loud and far reaching song uttered with relentless stamina for hours on end. A monosyllabic, resonant and drawn-out "huiiit". The pith rises towards the emphasized end of the call, which is repeated about once a second. Often compared to the dripping of water. Mostly heard at night, and often i duet with mate. The female answers the male with a slightly deeper and softer call, giving the impression of one bird giving a disyllabic call.
Wikipedia: map (se also Xeno-canto below)
Birdlife ecology
