I have a book from Dorling Kindersley called Animal Encyclopedia (the German version that I have is called Das große Tierlexikon) with images from animals.
One is titled Emperor Penguin (Kaiserpinguin) which is in my opinion clearly recognizable as a King Penguin (Königspinguin).
This is the image:
I wrote to Dorling Kindersley and they told my that their investigation revealed that it really is an Emperor Penguin.
I am not a biologist nor a penguin expert, but from all the descriptions and images I could find (even in the same book on other pages!) I think the publishing company is wrong and just too lazy or arrogant to admit this error and too miserly to release a revised version of the book.
Who is wrong? Me or Dorling Kindersley? Emperor or King?