What ethical guideline must falconers follow regarding the location of an eyrie?

The focus on leaving at least one young in an eyrie reflects a key ethical guideline in falconry that prioritizes wildlife conservation and the sustainability of raptor populations. This practice helps ensure that the breeding pair can continue to reproduce and maintain their numbers in the wild. By intentionally leaving a young bird behind, falconers contribute to the future vitality of the species, which is crucial in promoting healthy populations and ecosystems.

The other choices do not emphasize the core ethical principle of conservation in falconry. Sharing the location of an eyrie, for instance, could potentially jeopardize the safety of the birds from poaching or disturbance. Communication with the press does not have any specific relevance to ethical guidelines in falconry practices, and giving a trained hawk to an apprentice falconer does not necessarily pertain to the ethical treatment of wild populations or their habitats. Prioritizing the welfare of the birds in the wild by ensuring that they can continue to thrive is what underscores the significance of the correct choice.