Collared Forest-Falcon - Micrastur semitorquatus

Song: Loud hollow, slightly whining "owh" calls, repeated steadily or run into a slightly laughing series "kow kow ow ow ow ow ow ow ow ow".

Sound: Rodrigo Dela Rosa (http://www.xeno-canto.org/49646); 2010 Mar 13; Brazil; Horto Florestal-São josé dos Campos; Call;