The safest and most durable materials for parakeet cages are stainless steel and powder-coated metal. These materials are not only sturdy and long-lasting but also safe for birds, as they don't contain harmful substances like lead or zinc. Stainless steel is particularly recommended due to its resistance to rust and ease of cleaning, ensuring a hygienic environment for your bird. When selecting a cage, avoid painted or galvanized materials unless you can confirm they are free from toxic elements. Prioritizing safety and durability in material choice is crucial for your bird's well-being.