Yes, I use the approved boxes you have in the link. Do they have the rates listed on the site? Still browsing it at the moment. Haven't found the prices yet.
I have been shipping a few batches of chicks and older birds but always have problems finding how much it costs to ship them which delays me a lot. Is there a rate of (for example) $4 a pound for shipping a live bird? Is there a flat rate for chicks? What about adults. I never know the price...