I agree. Poultry exhibitors travel with their birds frequently. Although occasional mishaps occur, by and large
their are few problems if some good planning and common sense are used.
You don't want carriers which are too big, just enough room for them to stand up if needed. The more space that they have, the more distance to travel, and momentum to build up, to smash into the side of the crate if you need to hit the brakes for some reason.
They don't need feed and water while you're moving. In most cases they won't even bother with it until you stop. Twice a day is more than enough, even one will be OK. Some people travel 2 days to a show without stopping to feed and water.
The nipple waterers is a good idea, but just make sure that you've used them with the birds for at least a week or two, so that they recognize them as a water source, and learn how to use them properly. You don't want to have them full while you're on the road. The constant movement causes continuous dripping, and the last thing that you want is wet bedding with no way to replace it. It might just be easier to use open dishes when you stop.
The most important issue is to be careful of summer heat in an enclosed vehicle, if you stop to eat, etc, just like you would for a dog. Cracking the window a bit is not going to do it.
