beekybuzzard, thanks for your knowledge of the law. I wonder if USPS warns people that they will take no measures to keep living beings in livable temps, before they accept their money? I imagine if they did, some people - at least - would wait on shipping till more forgiving temps arrived. Many hatcheries would probably carry on, just hatching more when some are reported dead. While intellectually I understand they see it as a business and about the bottom line, I have trouble seeing these little lives as so easily expendable. Freezing to death or dying from too much heat - who amongst us humans would want to trade places with these babies (or any live being shipped in those conditions)?
I still think it would be good for anyone who has experienced a problem to register concern with USPS about their transport system, because maybe they would be inspired to devise a better transport system for the future (granted, not highly likely, but it will never happen if no one raises the concern).
If USPS (or any other transporter) doesn't find a way to keep chicks (or any other living being) warm enough in frigid weather or cool enough in blistering temps then I can only hope that increasingly people will avoid shipping living things during such extreme weather. Many people probably innocently have chicks (or other living beings) shipped, thinking proper safeguards will be taken. Since this is not the case, maybe we can educate folks to the best of our ability.
JJ