The Bird House will still have the flamingos, kori bustards, and cranes. They will also continue their work with kiwis.The Great Flight Cage to my knowledge is not getting much of a face lift, but the species list will change.
From the Zoo's press release about the Bird House renovations:
"The outside yards on the Plateau will continue to feature charismatic favorites such as Caribbean flamingos, ratites, cranes and kori bustards from the Zoo’s current collection. In the outdoor Great Flight Aviary, North American birds with conservation success stories, such as the wild turkey and wood duck, will complement other resident birds and offer an opportunity to learn how to bird watch within a temperate forest typical of Washington, D.C.’s Rock Creek Park."