My 9 month old IS bitch, Cherry, has in the past month, taken to stalking any birds that she sees on our walks across fields etc. I think she is displaying the classic 'set' position in that she stalks (creeps) with her legs and body very low to the ground. She has also taken to stalking this way in the margins of the streams and canal and any ditches, presumably to avoid being seen by prey. (This results in a very muddy setter!) When we reach the fields where she can run off-lead, she sprints around for a few minutes to let off steam before getting into her stalking routine and stalks this way for about an hour, creeping practically the whole way around the fields, only breaking the 'set' to sprint around the field flushing any magpies, crows etc that she sees. I can only find one 15 second video on U-Tube of similar behaviour. Do other's dogs exhibit the same behaviour?