context: In 1837, the Pirate Captain (Hugh Grant), inexpert in the ways of pirates, leads a close-knit, rag-tag group of amateur pirates who are trying to make a name for themselves on the high seas. To prove himself and his crew, the Pirate Captain enters the Pirate of the Year competition, with the winner being whoever can plunder the most. After several failed attempts to plunder mundane ships, they come across the Beagle and capture its passenger Charles Darwin (David Tennant). Darwin recognises the crew's pet Polly as the last living dodo, and recommends they enter it in the Scientist of the Year competition at the Royal Society of London for a valuable prize. Secretly, Darwin plans on stealing Polly himself with the help of his trained chimpanzee, Mr. Bobo, as to impress Queen Victoria (Imelda Staunton) whom he has a crush on; the Pirate with a Scarf (Martin Freeman) becomes suspicious of Darwin's motive after one failed attempt to steal Polly.
  The pirates disguise themselves as scientists to enter the competition, and the dodo display wins the top prize, which turns out to be minuscule trinkets and a meeting with the Queen. The Pirate Captain hides Polly before the meeting. There, the Queen requests that the Pirate Captain donate Polly for her petting zoo. The Pirate Captain refuses and accidentally reveals his true self, but Darwin steps in to spare the Captain's life, secretly telling the Queen that only the Captain knows where Polly is kept. The Queen lets the Pirate Captain go and orders Darwin to find Polly by any means necessary. Darwin takes the Pirate Captain to a tavern and coaxes out of him that Polly is stashed in his beard. Darwin and Mr. Bobo are able to steal the bird, leading on a chase into the Tower of London where the Queen is waiting. She dismisses Darwin, and instead offers the Pirate Captain a large sum of money in exchange for Polly, which for the Pirate Captain would be enough to assure his win as Pirate of the Year. He accepts the offer and returns to his crew, assuring them Polly is still safe in his beard, though the Pirate with a Scarf is suspicious of his newfound wealth.
  At the Pirate of the Year ceremony, the Pirate Captain wins the grand prize from the Pirate King (Brian Blessed), but rival pirate Black Bellamy (Jeremy Piven) makes the Queen's pardon known to all and explains that if the Pirate Captain has been pardoned, then technically, he is no longer a pirate and, as such, can't be Pirate of the Year. The Captain is stripped of the prize, treasure, pirate attire, and his pirating license and is banished from Blood Island by the Pirate King, and admits his loss of Polly to his crew who abandon him. The Captain returns to London, intent on rescuing Polly. He reunites with Darwin, learning that the Queen is a member of an exclusive dining society of world leaders that feast on endangered creatures, and that Polly is likely on her flagship, the QV1 to be served at the next meal. The Pirate Captain and Darwin work together to steal an airship to travel to the QV1. Mr. Bobo, meanwhile, goes to find the rest of the Captain's crew to enlist their help.
  Aboard the QV1, the Queen locates the Pirate Captain and Darwin and attempts to kill both of them, but together they best her. In the battle, they accidentally mix the ship's store of baking soda with vinegar, causing a violent reaction that rends the ship in two. The Pirate Captain rescues Polly and they escape safely, leaving behind a furious Queen. With his reputation among pirates restored because of the large bounty now on his head, the Pirate Captain is reinstated as a Pirate, and he and his crew continue to explore the high seas in search of adventure.
  In a few post-credits scenes, they leave Darwin on the Galapagos Islands, Mr. Bobo joins the Pirate Captain's crew, the Queen is left at the mercy of some of the rare animals she had planned on eating, Black Bellamy is forcefully stripped of his trophy by the Pirate King because of the Pirate Captain's new infamy, and the crew present the Pirate Captain with their own homemade Pirate of the Year trophy.
question: What does the Pirate Captain have Darwin help him steal?
answer: Polly, the last living dodo.