The short answer
Yes — strawberries are a safe, vitamin-C-rich treat for budgies.
Why
Strawberries offer vitamin C and antioxidants, and the tiny seeds on the outside are harmless. The catch is sugar, plus strawberries are one of the most pesticide-heavy fruits, so wash well or buy organic.
How to feed it
Wash it, cut a small piece, and offer it in a dish or clipped to the bars. No need to remove the outer seeds.
How much & how often
A small piece 2–3 times a week.