Why should one end of a creance NOT be anchored to a solid stationary object?

The rationale for not anchoring one end of a creance to a solid, stationary object is that it can lead to a broken creance or an injured bird. When a falcon is tethered via a creance, it needs the freedom to move within a controlled area without the risk of injury. If the creance is securely fastened to an immovable object and the bird attempts to fly, it may strain against the creance, potentially leading to physical harm. The bird could suffer injuries such as dislocations, broken wings, or other trauma if it encounters resistance during its natural flight instincts.

Proper use of a creance involves allowing the bird to experience the sensation of flying while still providing a level of safety. This controlled environment is essential for training but must be carefully managed to avoid any harm that could result from an improper setup.