You would seem to be confused between the hawk's behavior exhibiting a pattern and the hawk knowing something about natural selection. The hawk can preferentially kill animals which are the most easy to detect without knowing or caring that his behavior matches part of a certain scientific theory widely discussed among humans.
Hoping this straightens things out for you but not feeling too optimistic, etc. etc.
Exactly - no pattern - just random. Natural Selection is not driving the hawk therefore Natural Selection is an observation of many points of data, not a force or structure. Natural Selection only exists in our minds.
This is the core philosophy of Evolution - the something from nothing model - a philosophy that believes extreme complexity, pattern, and design can spring forth from the complete absense of complexity, pattern, or design.
IF you think Natural Selection follows a pattern - state the pattern - although I am not too optimistic you will actually try.