Solid D-CAP. Last 2 birds dropped on the spot. Most likely a clean miss or a rapid kill with no tracking. Now if you miss your target by almost exactly the width of the broadheads to the front you could cut off the beak. A very unlucky situation. Then again, if you miss by a few inches with a conventional broadhead and shot at the vitals it is likely a lost bird, maybe gutshot. I like big vpa, snuffer, or Simmons heads, but shoot to break the pelvis(a recommendation from a hunter I respect) to aid in recovery.