It appears more than a few of the approximately 600 employees currently working at Twitter left the GooglePlex at some point to do so… 13 percent according to a report from AllThingsD.

Among the more notable of Twitter’s 87 ex-Googlers, CEO Dick Costolo, who had a short stint at Google after they purchased his FeedBurner startup, former Senior Product Manager at Google Satya Patel, and their recent acquisition former Products Counsel at the Plex and Head of Music partnerships at YouTube, Glenn Otis Brown.

While the majority of ex-Google employees seem to leave on good terms, one current Twitter staffer, creative director Doug Bowman, explained in a blog post entitled “Goodbye, Google” his frustrations with the working environment and reasons for leaving the company.

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Googlers leaving to work for startups is nothing new; the NYTimes reported last year that approximately 200 ex-Google employees worked at Facebook, many of which were recruited specifically by COO Sheryl Sandberg, former Vice President of Global Online Sales and Operations at Google.

Analytics firm Seravia recently published a report of the top ten Google engineers that Facebook should “poach”, based on those with the most invention patents currently owned by Google. It wouldn’t be a stretch to think that these might also be some of the people Twitter could benefit from recruiting.

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