Ethics are persoinal.
there for if it is leagle I have no problem with someone doing it.

I would not but if some one else did who am i to judge?

It would be my guess that it is not a standerd tactic where its leagle.
I would say its more of a target of optunity.

Some one out deer hunting or some other form of hunting just happans across a roost and they get one.