On Thu, Aug 6, 2015 at 11:07 PM, Pine W <wiki.pine@gmail.com> wrote:
This is the second article recently in which I've encountered unexpected behavior when trying to align images.

https://en.wikipedia.org/wiki/White-cheeked_starling

Am I missing something, or is there a bug that's resulting in images being misplaced?

This would be easier to answer if you explained what the unexpected behavior is :) 
If you are referring to the vertical positioning of the image, it is pushed down by the previous (right-floated) image which in turn is being pushed down by the infobox. CSS 2.1 9.5.1 has the exact (rather complex) ruleset for positioning floats, the relevant part here is that a float can never be higher than any preceding float, even if they are floated in different directions.