A war movie for children

"It's not the size of the wingspan, it's the size of the spirit," declares Valiant (Ewan McGregor), the brave but undersized homing pigeon who passes for a war hero in the bland Disney animated film named after him. Valiant, you see, is small enough to steal into enemy headquarters by squeezing himself down the barrel of a gun.

His too-cute motto exemplifies the goody-goody tone of this World War II cartoon in which the British Royal Air Force has morphed into the Royal Homing Pigeon Service, or RHPS. The German Luftwaffe has become a flock of sadistic falcons decked out in shiny black leather and matching eye patches, obsessing neurotically about the colors of their capes.

It's not giving much away to say about this poorly plotted, suspense-free film that the little homing pigeon with superior spiritual girth becomes a hero by carrying a message to the good guys about a change of locale for the Normandy invasion. He gets a little help from a pair of French rodents whose mouse division is led by a sultry female warrior named Charles De Girl (Sharon Horgan); her appearance is accompanied by (what else?) strains of Edith Piaf.

As a reward for it all, Valiant gets a smooch from a friendly nurse, Victoria (Olivia Williams), with whom he has exchanged no more than a sentence or two before the I-love-yous. Victoria bears a strong physical resemblance to Daisy Duck. In fact, the movie's whole crew of fussily designed fowl looks more like ducks and chickens than pigeons. Valiant is so lacking in distinguishing characteristics, including McGregor's colorlessly chipper delivery, that he is practically faceless and therefore instantly forgettable.

Most of the other pigeons in his unit, Squad F, including the twin lugs Toughwood and Tailfeather (Brian Lonsdale and Dan Roberts) and the foppish twit Lofty (Pip Torrens), are also characters in search of greater definition.

There is no effort to resolve the incongruity of the movie's semirealistic images of guns, tanks and aircraft with the ethereal play of animated birds flitting around and comically smashing into things. When Squad F crosses the English Channel on a mission to contact the French Resistance, you may wonder why the pigeons have to be transported in cages aboard a military aircraft. Shouldn't they fly on their own steam?

The jarring juxtaposition of metal and feathers is not the movie's only conceptual confusion. Computer animation in the post-Toy Story style to which Valiant belongs requires narrative chiaroscuro of comparable sophistication, and it's just not here. The thudding old-fashioned screenplay abounds with hearty slogans and mild avian puns mouthed by shopworn British stereotypes. So much of the dialogue is shouted (sometimes only semi-intelligibly) that entire sections of the movie sound like protracted hollering. Valiant is in dire need of some Shrek-ian sass, not to mention a drop or two of genuine emotion.

A slew of wonderful British actors do what they can to lend personality to their underwritten characters. Jim Broadbent is the bellowing RHPS training sergeant and Hugh Laurie the preening wing commander Gutsy, who likes his bug juice shaken not stirred. John Cleese is Mercury, a cheeky prisoner of war who runs off at the mouth nonsensically when his falcon captor administers truth serum.