Answer:
Naturalistic Observation.
Step-by-step explanation:
Naturalistic observation may be defined as the observation of their research in the natural environment. The behavior study of living organisms are generally done under naturalistic observation.
Jamal wants to study the mating behavior of birds. He should observe the behavior of birds in their natural environment where the birds mate. Jamal uses naturalistic observation because it involves the behavioral study of birds in their natural environment instead of lab.
Thus, the answer is naturalistic observation.