21. Macaws
Macaws are stunning, large parrots celebrated for their intelligence and vivid coloration.
However, their long lifespans—sometimes exceeding 50 years—combined with highly specific social, dietary, and environmental requirements make them difficult to care for in most homes.
Without proper stimulation and companionship, macaws often develop behavioral issues such as feather plucking and aggression.
The World Parrot Trust details the many welfare challenges faced by macaws in captivity, highlighting the importance of proper care and ethical considerations.