Sadly the administrator of a well known forum just recently lost her most loved Macaw. There are several Macaws in the home and one African Grey. The Macaw died from heart failure from asthma obtained from the bird dust of one bird- the grey. There were two quality filtration machines in the home and only last minute symptoms. I tell you this because if you are mixing old world and new world birds you may be asking for problems. Know your bird species that are dusty birds and do not mix them with susceptible birds like Macaws and sun conures. http://www.birdtricks.com/blog/why-y...ies-separated/
I also suggest you become familiar with which disease your bird may get. Here is a link to bird species and their diseases. http://beautyofbirds.com/BirdSpeciesSyndroms.htm
Because of what is happening to chipper I guess you could say I am now hypervigilant.