Tongues of Serpents - Naomi Novik

Convicted of treason despite their heroic defense against Napoleon's invasion of England, Temeraire and Capt. Will Laurence have been transported to a prison colony in distant Australia-and into a hornet's nest of fresh complications. The colony is in turmoil after the overthrow of military governor William Bligh-aka Captain Bligh, late of HMS Bounty. And when Bligh tries to enlist them in his bid to regain office, the dragon and his captain are caught in the middle of a political power struggle. Their only chance to escape the fray is accepting a mission to blaze a route through the forbidding Blue Mountains and into the interior of Australia. But the theft of a precious dragon egg turns their expedition into a desperate recovery operation-leading to a shocking discovery and a dangerous new complication in the global war between Britain and Napoleon.