15. Which of the following statements about lesser and common kestrels is true?
(A)The lesser kestrel and the common kestrel have similar diets.
(B)The lesser kestrel feeds sociably but the common kestrel does not.
(C)The common kestrel nests in larger flocks than does the lesser kestrel.
(D)The common kestrel nests in trees, the lesser kestrel nests on the ground.