Past the date but thought this might be worthwhile sharing.
Have just dug out our copy of Field Guide to the Sea-birds of Southern Africa and the World and see that the Common Cormorants are well covered.
Past, present and future members
of The Royal Naval Birdwatching Society
This info/link follow-up is a bonus for the ex iFocus. It’s true that sometimes a book or source doesn’t speak to you at the time you see it first, but later a bit more experience or awareness makes it more immediate and interesting.
All ex iFocuses can (will?) be updated regularly - I see them as continuously dynamic Community reference zones.
Interested users need only to Favourite or add a comment to be ‘kept in the loop’
I also think they can be repeated as time goes by.