I'll explain 1 thing, that is possession of birds in which you are not clear about.
Yes the fed law states that you must somehow identify whos fowl is whos. Not just in in a vehicle, but also in the blind. It has to do with lawbreakers trying to bend the laws to their advantage. Thus you must be able to identify (keep seperate) whos fowl is whos. This has to do with "party" hunting which is illegal for fowl. Often in a group you will have 1 real good shooter, 1 average and 1 poor shot. The good shooter may not shoot moore than his daily legal bag. Say the limit is 7 birds, once he gets his 7, he must put away his firearm even though the poor shooter may only have 1 bird. You may only shoot your own birds, you may not shoot another hunters birds for him. And the sperated birds is so that specie restrictions are not violated. The good shooter can not say shoot 3 Cans and 3 Pintials and 1 Mallard for his 7 and then try to give away 2 Cans and 2 Pintails to the other 2 guys -nope- to shoot over the daily species restriction is illegal. If a guy did the above-he would be gulity of 4 counts (2 over the limit Cans, and 2 Pintials).
The laws are set in place to prevent abuses of overharvest.
But say at the end of the day, the good shooter has his 7, and average shooter has 3 and the poor shooter 1. The good shooter may "gift" some of his birds to the others guys--but the birds must be accompanied buy his, name, adress, lic #, date and who he gave them to, species listed including hen or drakes, (all on paper) so that the gifting is legal. And he may not gift more than the daily specie restrictions to a person either. EG if the poor shooter had a Pintail-he may not gift a Pintail to the guy since he is already had one that day.
I hope this clarifies the possession laws and their intent.
The Deputy riding shotgun