http://www.birdhobbyist.com/articles/Poopology101.html might give you some useful clues
and this site might too including its thoughts on vegetables and handling
http://www.parrotparrot.com/library/
Have you made sure to keep them warm? sometimes offering a choice of being under a warm lamp or in cooler shaded part of a cage can help a bird recover.
As its all the birds something contagious or something given or accessed by all is the likeliest culprit. Check what you are feeding, check houseplants, check that no toxins are in the home (teflon, bug sprays etc) Did you start any new foods or treats or chew sticks etc before this began - think about things like that.
If you are seeing any neurological symptoms you might wonder about West Nile disease too.
http://www.oldworldaviaries.com/text/miscellaneous/west-nile.htm
I think I'd start with everything the birds are exposed to and take a good look at that. Then look at diet and see if some extra fiber will help and make sure no contaminants are in the food.
Hope this helps you!
Edited by NHolmes on September 3 2005 at 2:54pm
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