As the range of the Barred Owl Strix varia expanded to the north west of the United States of America, it overlapped that of the Spotted Owl
Strix occidentalis. In some cases when the two species met, they hybridised, producing 'Sparred Owls'.
Female Sparred Owl, Northwest of Roseburg, Oregon USA. Photo contributed by Janice Reid,
a member of the Wildlife Ecology Team of the US Forest Service.