A Delaware animal shelter is trying to care for and rehome thousands of chicks that survived being left in a postal service truck for three days. Trapped in a warm enclosure, without food and water, thousands died before they were discovered on May 2, CBS affiliate WBOC reported.

More than 12,000 chicks at a Delaware distribution center were found left in a USPS truck for more than three days.

The chicks were left abandoned due to a "misdirected" shipment, according to the Delaware Department of Agriculture.