I m planning to send one or two day-old chicks in cargo hold (live animals arent allowed in South Africa in the cabin for some silly reason - very annoying!!) from Johannesburg to Cape Town. Its only a two hour flight and I will give them a heating pad, but someone form an animal travel agency told me the other day that you can't fly them before 6weeks because their lungs can't handle the altitude, and they all die! Is that true??!?? I thought people fly day-old chicks all over the States the whole time?? PLEASE someone let me know?? Desperate and Worried!!