CANNES — “Shrek” producer John Williams is teaming up with Ealing Studios and Ralph Kamp’s Odyssey Entertainment to make “Valiant,” a $40 million CGI movie about a heroic pigeon.

Odyssey is launching the project, its first movie production, to international distribs at Cannes.

Rob Letterman (“Los Gringos”) will direct. Script by George Webster is the story of a wood pigeon who aspires to become a messenger in the Royal Air Force during WWII.

Barnaby Thompson of Fragile Films, which co-owns Ealing, is the pic’s British producer.

” ‘Valiant’ will be a state-of-the-art CG animated film with a great script, a clear audience and a landmark, inexpensive pricetag,” says Thompson. “It’s very exciting to be building an animation facility at Ealing Studios to produce this film.”

Kamp estimates that the film would have cost twice as much if made in Hollywood.

“We are enormously proud to be working with John Williams and Barnaby Thompson and the brilliant team they have assembled to create this amazing and inspiring feature,” says Kamp. “We believe ‘Valiant’ has the qualities that cinema audiences the world over are looking for.”

Computer work will be handled by MenaceFx, headed by Buckley Collum and Curtis Augspurger (“Space Jam”).