Hi all, Im at it hard again for another louisiana duck season. Today we did very well and after retrieving a drake gadwall I noticed this bird had a complete black and white ring around his neck. I know I've seen this somewhere but cant locate any info on it. Whether its rare, or what causes this. Iv killed hundreds of gadwals and this is a first to me. Can anyone shed some light or share similar kills. I also have a purple headed gaddy that I killed last season at my taxi right now. A ring necked one might fit in well with him.