Hi, I'm new to this forum and have a question .. First let me paint a picture of my pride and joy; I've build an outdoor walk-in aviary (i live in the UK), 3.6m x 1.8m x 1.8m. We started of with 4 cockatiels, 4 budgies and 4 lovebirds. Now we have 4 cockatiels, 10 budgies and 7 lovebirds...