Indoor housing for the birds living in the walk-through aviary. Obviously not very good - not very big considering the number of birds in the aviary, even if they spend little time in here, filthy and very bad-looking. As far as I could see, there is only one more indoor space for the walk-through aviary and it is even worse than this one (old, dirty and in very bad shape). The indoor housing for this aviary definitely needs improving.