If the St. Ives route is taken with this riddle, there would be a lot of superfluous information. The St. Ives riddle does that as well, but I doubt the rates of speed listed for a couple of groups of animals are insignificant here. The other riddles so far have been simply stated. If the St. Ives riddle format would have been used, it would have been more apparent. All the numbers in this recent riddle are likely of use in finding the solution. No other riddles had superfluous data.
Just some pondering aloud here as to discern what the relevant data is for this one....