Whistling Heron (Syrigma sibilatrix) [XC245361]
by Oscar Humberto Mar\u00edn G\u00f3mez from Bosque de Don Gregorio, Vereda Caribabare, Tame, Arauca, Colombia (song)
Whistling Heron (Syrigma sibilatrix) [XC287002]
by Robson Silva e Silva from Reserva Ecol\u00f3gica de Guapi A\u00e7u (REGUA), RJ, Brazil (call)
Subspecies
Validity of subspecies fostersmithi sometimes questioned.
The following 2 subspecies are recognised:
sibilatrix (Temminck, 1824) - Bolivia to south-eastern Brazil and north-eastern Argentina.