This sample is of the Groove-billed Ani (Crotophaga sulcirostris) - normal flight songs. This sample could also be titled "Why they call them "tijos". (Costa Rica)
Groove-billed Anis (Crotophaga sulcirostris) (which are Cuckoo relatives) are common residents of fields and clearings -they like to hang out around marshes, too, which is where I recorded these. Cattle are their best friends, as they like to eat the insects the cattle stir up. They always want to announce their arrival by calling their "Tijo, Tijo" call. (Costa Rica)
Here is an example of a Groove-billed Ani (Crotophaga sulcirostris) recorded above Grano de Oro in the Talamancas (Costa Rica), 6/24/99, illustrating the call notes leading to the "song".
This unusual vocalization was made by a single Groove-billed Ani (Crotophaga sulcirostris) in Monteverde (Costa Rica) - Jim Zook, an accomplished ear-birder in Costa Rica says that he has also heard this call from the species.