What should be avoided before opening a bird's cage?

When preparing to open a bird's cage, it is essential to consider the environment and safety of the bird. Turning on exhaust fans can create drafts and disturb the air currents around the cage, which can be stressful for birds. Birds are highly sensitive to changes in their environment, and a draft from an exhaust fan might startle them or cause discomfort.

On the other hand, locking the cage door, removing the bird from the cage, and cleaning the cage involve actions that are generally part of routine care and handling. While these actions do require caution and proper techniques, they do not inherently create an immediate risk or stress factor that would arise from turning on exhaust fans. Therefore, avoiding the activation of exhaust fans is the most prudent choice to ensure a calm and safe experience for the bird when the cage is opened.