An Interesting Feeding Behavior of the Wilson's Storm Petrel Is

An interesting feeding behavior of the Wilson's storm petrel is

A) plunging to great depths into the ocean in search of food.
B) using their feet to paddle just below the water's surface so they appear to be walking on the surface.
C) catching a clam and then dropping it over rocks to break it up.
D) stealing eggs from nesting birds while the parents are sitting on the eggs.
E) skimming over the water surface with its beak partially immersed.