Hoist the Jolly Robin! Fly with a swashbuckling crew as they soar through the air in search of treasure and lofty adventure. Captain Blue Jay, notorious and feared pirate of the skies, has a fondness for collecting treasure, especially eggs. Unfortunately, sometimes his treasure hatches: and this time the hatchling is the strangest one the Grosbeak has ever seen. Whether the chick is a young god or just an oversized bird who needs too much food, no sailor is certain. But one thing is clear: the winds over Thrushland are shifting, and dramatic changes are in store for all. Whether outwitting a gang of thieving crows, outrunning murderous weasels or rallying Briarloch's beleaguered sparrows, this motley crew must do all they can to stay together ...and stay alive.