Published March 15, 2013, 12:00 AM
A great gray owl is carried by volunteer Marcia Wolkerstorfer
A great gray owl is carried by volunteer Marcia Wolkerstorfer to be examined at the Raptor Center on the St. Paul campus of the University of Minnesota, Wednesday, March 13, 2013. The center listed about 30 owls as patients this week. It has been a tough winter for owls in some parts of North America. Some have headed south in search of food instead of staying in their northern territories. (AP Photo/Jim Mone)
Read the article: Tough winter forces owls south in hunt for food
