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+฀74฀+ Great Gray owl Strix nebulosa This very large owl is of accidental occurrence in Iowa. The fact that it is a bird of coniferous old-growth forests puts it in conflict with logging interests. Its conformation is similar to, though larger than, that of the barred owl, but it has yellow instead of brown eyes. Young nonnesting birds can be heard calling from the marginal habitat where they grow up; they compete for prime habitat when they become nesters. qr +฀75฀+ ...

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