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

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.

A Delaware animal shelter is working to find new homes for 8,000 surviving chicks that were left abandoned in a U.S. Postal Service truck for three days. Another 4,000 of the animals died.