Anne Hathaway, Neil Patrick Harris and Rodrigo Santoro are talks to lend their voices to "Rio," the next collaboration between Fox Animation, Blue Sky Studios and helmer Carlos Saldanha, all of whom worked together in the gargantuan success of $882 million global earned by "Ice Age: Dawn of the Dinosaurs."

"Rio" follows the adventures of a nerdy macaw who flies out from his small-town Minnesota cage for the exotic Summer Olympic city of Rio de Janeiro. FIlming is apparently set to start on April 8th, 2011 and will be shot in 3D digital animation.

Chris Jenkins ("Surf's Up") and Bruce Anderson ("Dr. Seuss' Horton Hears a Who!") are producing.

Hathaway and Harris have done animation before. Hathaway voiced the lead role of Red in the Weinstein Co. release "Hoodwinked!" in 2005, and Harris voiced a character in "Cloudy With a Chance of Meatballs" from Sony Pictures.

Fox has not confirmed casting