A Haggard is defined as what?

A Haggard is defined as an adult bird with hunting experience. This term specifically refers to birds of prey that have matured and have been trained or have demonstrated the ability to hunt in the wild. In falconry, understanding the distinction between different types of birds and their maturity levels is crucial, as it informs the falconer's training methods and expectations.

The other concepts, while related to birds, do not apply to the definition of Haggard. A young bird would pertain to various life stages prior to adulthood, a bird in the nest refers to nesting young which have not yet developed hunting skills, and a fledgling that has just left the nest is still in the transition stage from dependence to independence and has not yet gained hunting experience. Thus, the term Haggard specifically emphasizes maturity and skilled experience in hunting, which is what sets it apart from these other definitions.