Call ASPCA Poison Control: 888-426-4435 or your vet immediately.
Onion is not safe for Macaws and should never be offered. Onions cause hemolytic anemia in all birds for Macaws. There is no safe serving size — even tiny amounts can cause serious harm.
Causes red blood cell destruction in birds. If your Macaw has accidentally eaten Onion, do not wait for symptoms. Contact your vet or ASPCA Poison Control (888-426-4435) immediately — early treatment dramatically improves outcomes.
| Thiosulfate | ❌ Toxic to all pets |
| All forms | Raw, cooked, powder |
| Safe amount? | Zero |
| Action | Vet immediately |
Vet-recommended, best-selling on Amazon