When Too Tall and the gang decide they're going to build their "ultimate" tree fort in a big old tree in Birder's Wood, Brother, Sister and their pals try to convince the gang otherwise in order to protect a rare bird nesting in the same tree. As the situation escalates, the two sides find themselves locked in a stalemate, both sides believing they are right. Ultimately the standoff is ended as Papa helps the cubs come up with a compromise - one that allows the gang their most excellent tree house as well as ensures the safety of the bird and it's nest. After seeing the babies hatch, Too Tall admits that he and his gang never intended to hurt the birds, they just wanted the tree. Brother understands this and the kids enjoy the Treehouse together.
