Ok, so I just got off the phone with USPS. 800-ASK-USPS, She said ...
For day old chicks -you can only send them air or ground only, not internationally.
only being shipped April through August only.And a surcharge may apply about .22 per lb.
For Adult birds- Ground and Air mail- Express Mail only. Can be shipped whenever, no restrictions right now.
She did happen to say that Ca cant send to Alaska or Hawaii right now, but didn't give a reason why.
My suggestions are to call the 800# to ask them specifically your area info. It is automated then you can ask for customer service and you will get a real person. Good luck!