There are two categories of parrots. Old World species such as the cockatiel and the senegal are native to Asia, Africa and Australia. New World parrots including macaws, amazons and conures originated in Central and South America and Mexico.
New World and Old World parrot species, in their native habitats, live in different environments. New World parrots live in temperate areas such as the damp rainforests while some Old World species inhabit arid, dry conditions. These make for variations in physical and biological needs.
Veterinarians are finding that this powdery dust can cause serious illness in Old World birds. A bird can begin to wheeze, then cough and as the illness progresses, have difficulty breathing. Macaws appear to be particularly sensitive to the dust.
If you have birds both Old and New World, there are things you can do to protect them.
If you can keep them in separate rooms, that may help.
Bathe the birds who produce the dust more often.
Clean the cage often. Paper liners are easy to replace and much less expensive than other litters.
Mist the cage, bottom included and your bird several times daily.
Use a good quality ventilation system.
Climate and situation permitting, keep your birds in an outdoor aviary.
These suggestions will help keep the humans as well as the birds healthier.