Dave Lauten suggested that there is "no clear answer." Actually all you have to do is answer the question that he poses (see below). "Who decides what is acceptable and what isn't? " The answer to this question is simple. Each individual birder is ultimately responsible for their behavior in the field. With the exception of National Wildlife Refuges, some state wildlife areas and state parks (some states) there are no enforceable rules/laws or "police" who are present to monitor our choices. It would be nice if there were standards that everyone agreed to, but that seems to be an unrealistic expectation. Working to raise the bar is probably best done one on one or in small groups or when leading a trip into the field, as that provides a context for meaningful teaching. Shawneen and I lead trips regularly both locally and afar and this topic is raised on almost every trip. Most birders, particularly newcomers, want to know how to interact with birds appropriately. My resistance to bringing this discussion into this forum is that your audience is comprised of mostly strangers in the sense that you have not been into the field them and therefore have no notion of how they pish, use playback or approach birds that they want to photograph. What invariably occurs is an "us vs them" debate, where we are quick to be self-righteous about our own behavior and equally quick to point out the shortcomings of semi-fictitious "bad apples." We all profess to know who "they" are even though we may not have made any effort to interact directly with those whom we designate as misbehavers. This occurs over and with photographer vs birder debates. No one wins or has much success converting others to their point of view. It's easy to tell people what to do in this forum, but it doesn't afford many teachable moments. In my opinion, those occur in the field. Dave Irons Portland, OR