A pair of stubborn Ospreys nesting just north of Duluth are giving Minnesota Power officials quite a challenge. The company tried- but failed- to prevent the birds from returning to the same nest they built last year, right on top of a utility pole. Workers even built a specially constructed nesting platform only 15 feet from the original site. The company is worried the birds are in danger of being hurt or could disrupt service. Joanne Hanowski is a bird expert with the Natural Resources Reseach Institute in Duluth. She says she doesn't know why the Ospreys won't use the new platform: