80 degrees may be a little too warm, I find that even though that’s what the book calls for, some duckies don’t read the darned books! At the same time, I can relate to fretting because there are a number of things that cause panting, some of them quite serious. Aspergiliosis (however we spell that) is a fungal respiratory disease. We can’t rule that out, yet, but if the little has been in a clean environment where contamination (such as wild waterfowl sharing the space, or previously infected birds sharing the space, or a very moldy environment) is not a problem, then it could be nerves, overheating, mild illness, or just one of those things.
. I love this forum because I was in a full panic about it (3 out of 4 of them have done it on and off for the last couple of days), and I was researching online and finding all of these awful possibilities! I was so relieved to read that a number of people have experienced the same thing and it often isn’t anything horrible. I fully clean their house every morning and spot clean throughout the day, and they have three waterers (!), all deep enough to flush their nostrils. I think mine probably are getting bedding in their throats because they will not stop eating it! 
