RE: creeks
Wow wide is the creek? Do you have a place to cross regardless of the depth....that is the main question. If it will affect you from getting to a certain area, I understand. If you are worried about the birds...they don't care.
If your crossing spots are limited, it might be worth putting some big rocks in a certain area...or a log across the creek to help in crossing it if the water gets too high...if you have time.