Every year, thousands of birds must be seen, but not identified, by good birdwatchers. Few get so far as to be photographed and to have pictures and descriptions circulated around the BBRC and its Seabirds Advisory Panel, yet still remain unresolved years later. One such report is that of an undoubtedly remarkable seabird, popularly known as 'The Chalice petrel' after the name of the vessel from whi

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