That is, when you have a second or two to do so!

Assume something in the order of F& M for a duck and M & IC for a dove. In both instances, the bird's undisturbed flight would carry it overhead and behind.

Do you lead with your tighter choke and follow with your open choke, or you lead with the open and retain the tighter for reserve?

How would you handle two birds flying together?

Build in any additional assumptions you'd like.