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Fieldofviewpigeonowl.svg Fields of view of pigeon and an owl Zorn pole holuba sovy Fieldofview UTC Fieldofview Jimfbleak en derivative work McSush talk Fieldofviewpigeonowles svg File Fieldofviewpigeonowlhu svg Created with Text Editor redrawn as svg image McSush Fieldofview Jimfbleak original upload log This image is derivative