A bird cage with dimensions of 46x46x107 cm is spacious enough for small to medium-sized birds, like budgies, cockatiels, or finches. Here are some tips for setting it up:

1. Perches: Include a variety of perch sizes and materials to keep their feet healthy.
2. Toys: Add toys to stimulate their minds and keep them entertained.
3. Food and Water: Ensure easy access to food and water dishes, and consider using a sipper bottle to minimize spills.
4. Hiding Spots: Provide some hiding places, like small houses or hanging baskets, to make them feel secure.
5. Cleaning: Use removable trays for easy cleaning and maintain a regular cleaning schedule.

If you have specific questions or need more details, feel free to ask!