World Bird List

Species factsheet
Boat-billed Flycatcher (Megarynchus pitangua)

Order: Megarynchus pitangua
Family: Tyrant Flycatchers, Calyptura (Tyrannidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
tardiusculus nw Mexico
caniceps w Mexico
mexicanus e Mexico to nw Colombia
deserticola c Guatemala
pitangua tropical n and c SA to n Argentina, Trinidad
chrysogaster e Ecuador and nw Peru