ScottM,
Great pics sir. The dog at 5 moths has clear talent and you damn well should be proud. Too many birds is a huge confusion to a young pup but it happens. Easy hunts that stress obedience but are a bit loose on the formal stuff are probably great for him and for you as your learning more about Jake every minute.
What your doing is clearly working, if you want more my suggestion is work on the quartering a bit and the commands. If you can trap pigeons then do so, dizzy them and plant them in situations that jake can use his nose but also can use what your training.
All in all he's doing great for 5 months and no formal training, should be a great pup for a long time.
if you feel hes solid enough to start training and collar conditioning go for it but at that age go slow and easy and let Jakes progress set the pace, if he starts to struggle back off and go back to what he knows to reinforce his confidence.
