Yes — broccoli is one of the most nutritious vegetables you can offer a parrot: calcium, vitamin K, and fiber in a built-in foraging toy.
What it means for macaws
There's nothing specific to a macaw that changes the verdict on broccoli — it's treated the same as for parrots generally. Macaws can handle a generous portion for their size.
The full picture on broccoli
Broccoli delivers absorbable calcium (vital for laying hens), vitamins K and C, and fiber. The floret structure traps treats beautifully, making it a natural foraging base, and both florets and stalks are safe.
Wash well; serve florets raw or lightly steamed.
Peel woody stalk skin and offer the tender core.
Stuff florets with seeds to combine veg and foraging.