I have a Lesser Vasa named Banjo They are seriously the coolest birds ever. They have such strange behaviors, like they can change the colors of their feathers without molting, and the female's head loses its feathers and turns yellow during breeding season. I wish I could obtain a Greater Vasa because I really would like to study these guys some more.
I know my Lesser LOVES to sing all the time, especially when i'm watching tv and he hears the background music. He doesn't really talk, i've heard him say "Hello", but other than that he just likes to sing and mumble. He also make an "alarm" sound every few hours during the day.
A greater and lesser vasa together.
The lesser seems to "sing" more than the greater; it's really very, lovely whistling.