Budgies in winter 🔴

Hi,

I live in a city that has cold winters, and I’m looking for general advice on budgie cage setup during winter.

The cage is large, kept indoors, and open during the day for free flight. At night, the birds sleep inside the cage.

What are the best practices for: • Keeping a large indoor budgie cage warm in winter • Reducing drafts without fully covering the cage • Safe heating options for large cages • Ideal room temperature vs. cage area temperature

Thanks.