Taking an image in a zoo and noting the
species that is written on the cage is different from just taking an
image and having other people guess what species it might be.
Good example actually. From the "by the book" perspective, the
zoo picture is better because it has a label beside the cage that
can be cited.
From the "ignore all rules and just create a great
encyclopedia"
perspective, the in-the-wild picture is better because it shows
the species in their natural habitat.