This gull was not well, sure it was when it was captured. I wouldn't help in this study if you paid me. Certainly has resulted in many deaths. This bird was walking very unsteadily. The other tag was missing from the other side, the tail and wing were droopy on right side, tail was fanned on right side. Sometimes gulls grab each others wings and pull, maybe what happened to this bird, another gull pulled on the tag and caused injury? Who knows, what ever the case, it is clearly wrong and disrespectful.