Bibliography: Origin-related, environmental, sex, and age determinants of immunocompetence, susceptibility to ectoparasites, and disease symptoms in the barn owlPage: 704Citation keywords: Switzerlandecologyin bird's nestAssociated taxa: Tyto albaClassification: Carnus hemapterus Add new comment You must have JavaScript enabled to use this form. Your name Subject Comment * More information about text formats feed me To prevent automated spam submissions leave this field empty. CAPTCHAThis question is for testing whether or not you are a human visitor and to prevent automated spam submissions. What code is in the image? * Enter the characters shown in the image.
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