How many attached radio transmitters are required for a hybrid raptor flown free?

For a hybrid raptor flown free, having at least two attached radio transmitters is essential for ensuring effective monitoring of the bird's location and behavior. This multiple-transmitter approach provides a critical safety net. If one transmitter fails or loses signal, the second one can still provide a reliable means of tracking the bird. This redundancy is particularly important in falconry, as it helps prevent the potential loss of the bird in remote or challenging environments where it might be difficult to recover the raptor.

Using only one transmitter can leave the falconer vulnerable to losing track of the bird if something goes wrong with that device. Having none would obviously eliminate any tracking capabilities, while using three unnecessarily complicates the setup and may not provide significant advantages over using two transmitters. Thus, utilizing at least two transmitters strikes a balance between reliability and operational efficiency in the practice of falconry.