The short answer

Yes — kale is one of the best leafy greens you can give a budgie.

Why

Kale is a nutritional powerhouse: calcium, vitamins A, C and K, and — unlike spinach — it's low in oxalates, so it's genuinely good as a daily green.

How to feed it

Wash a leaf and tear off a small, bite-sized piece; offer it raw, clipped to the bars or in a dish.

How much & how often

Daily is fine.