The following URL: https://en.wikipedia.beta.wmflabs.org/w/index.php?title=Bird&action=history displays a 500 or 503 error for me.
I can view the history using an API request: https://en.wikipedia.beta.wmflabs.org/wiki/Special:ApiSandbox#action=query&format=json&prop=revisions&titles=Bird&rvlimit=max