Alewives returned late to smaller Maine rivers this year

Alewives returned late to smaller Maine rivers this year

Alewives swim in a stream on May 16, 2021, in Franklin, Maine. The fish were once headed for the endangered species list but have been making a comeback in some U.S. states. Photo by Robert F. Bukaty of the Associated Press.By June 10 the fish were supposed to have come and gone already, but there they were. At first, they looked like a shadow in the water. On closer inspection, the dark blob resolved into hundreds, maybe thousands, of small sil…