I have just finished flipping through my latest book, Birdscaping Australian Gardens by George Adams. It's his latest one out, I think there may be another two books published previously before this. (but don't quote me.) It's a damn fine book. Although it mostly focuses on the backyard/front yard landscaping, I think it will invaluable to anyone wanting to plant out an avairy with Australian natives. I know that I have had alot of inspiration, and when the time comes for me to build new larger planted avaries I will consult and rely on this book quite heavily. And at only $59.95,, I think it's a cheap investment, that I feel will pay dividends for many years to come.Cheers
Ripley
saving money to buy it 
looks fabulous