Perhaps the ABA code of ethics periodically could be published here. I doubt if any one of us knows it by heart. It is helpful. It does offer guidelines. I find that my rather constant use of a camera while birding in recent years has made the code's suggested considerations and restrictions more relevant. Cameras tempt one. The code helps maintain perspective.
The code can be found at http://www.americanbirding.org/abaethics.htm Jim Williams Wayzata