Doohan,
From personal, very painful experience, let me say that you do not want a cormorant, aka water turkey, to stay any time at all on your place. Take action and do not just hope it leaves. They kiss and tell and before long you will have many. They eat 1.5 pounds of fish per bird per day. Do the math...100 pounds of fish are nothing to a flock of them.
Your 6 inch shiners will be gone in no time if you allow this bird and its buddies to set up shop.
