Alas the poor Ospreys, but Red Crossbills are similarly afflicted. I
don't know if this is in the Birder's Handbook or not, but it is
generally well known that the upper mandibles of Red Crossbills below the
equator cross the lower mandibles to the left, whereas ours cross to
the right. And vice versa for the lowers. So much for physics, also a vice.
Steve Herman