Yes — unsalted almonds offer healthy fats and vitamin E, and an in-shell almond is a great puzzle for big beaks.
Keeper's noteUnsalted, unflavored only — no smokehouse, no honey-roasted. One or two a day for larger parrots; a sliver for a budgie.
Why almonds is good for parrots
Sweet almonds (the kind sold for eating) are safe and nutritious: monounsaturated fat, vitamin E, magnesium, and protein. For macaws and large cockatoos, cracking the shell is genuine enrichment. They are calorie-dense, so they're a rationed treat rather than free food.
How to serve it
Plain raw or dry-roasted unsalted only.
In-shell for macaws and big cockatoos; shelled slivers for small birds.