John Harbaugh on queen tweet: 'Ravens do guard Tower of London'

OWINGS MILLS, Md. -- The Baltimore Ravens made a small international faux pas on social media, and coach John Harbaugh was surprised he wasn't asked about it by the end of Wednesday's media session.

"Nothing about the queen and the face-painting deal?" Harbaugh asked.

On Tuesday night, the team put out a picture of Queen Elizabeth II with the Ravens' head superimposed on her face, including the red eye, on its official Twitter account. It has since been deleted, but it still generated plenty of responses on social media.

The Ravens play the Jaguars on Sunday in the franchise's first game in London.

"I think it's important to remember that ravens do guard the Tower of London," Harbaugh said with a smile before walking off the podium.

At least six captive ravens live at the Tower of London. Their presence is traditionally believed to protect the crown and the tower.

The Ravens' tweet was likely meant to promote a feature on the Ravens' official mobile app that allows users to take selfies in virtual face paint. But it's often considered poor taste to use images of the British royal family, especially the 91-year-old monarch, for marketing purposes without permission.