Any chicks from a hatchery have to be registered with the CT Dept of Ag so they can check their certifications, apparently. I assume the hatchery notifies the DOA, or I guess it could have been the post office? Months after I got the chicks I got a letter in the mail from DOA asking for a list of what I got & to show the hatchery certs - I forwarded the invoice that had the NPIP # on it then I got a letter saying they were released from quarantine - funny cuz I didn't know they were quarantined! Or that any of this was a thing! Chicks came in Oct so I don't think it was because of HPAI.
No need to worry, they just get warm. I did mine on a counter.