Officials are investigating the deaths of four bald eagles in Delaware.
The Delaware Department of Natural Resources and Environmental Control said in a statement Sunday one eagle was found dead near Dagsboro on Saturday morning.
Three other birds were found disoriented in a farm field in Sussex County, about a mile away from where the first eagle was discovered. They later died.
Wildlife officials said other eagles flew from the area before they could be captured and have their health evaluated. Officials are asking the public to report any eagles that appear to be sick.
Sgt. John McDerby of the Fish & Wildlife Natural Resources Police said in a statement officials do not know what caused the eagles to become sick and die.
A group of 13 bald eagles was found dead Feb. 20 near Federalsburg, Maryland. U.S. Fish & Wildlife determined those eagles did not die from natural causes. USFWS is now offering a $25,000 reward to anyone who can lead to the person or persons who killed the birds in Maryland.