He does. First time I saw it I got a bit worried, but it didn't seem to bother him any. After 3 days he was pretty beat up, as he was working HARD. That said, no matter how tired he gets a whiff of a bird is a boost of adrenaline and it's back on! He did lay around for about 3 days after we got back. I know some folks warn me against it, but I just can't help myself, we'll be hitting the preserves a bit over the next few months.