Answer:
A. two different species on the basis of reproductive behavior
Step-by-step explanation:
According to the biological species concept, organisms that mate with each order and successfully produce viable and fertile offspring are said to be of the same species. The biological species concept is based on the reproductive behavior of organisms.
Therefore, going by the information given in the question above, we can say that the two group of birds, that share the same location and are similar in appearance, share the same behavior and diets, but do not reproduce with each other, are an example of two groups of different species on the basis of reproductive behavior.