'knitting ninja'

Outside Mocha Moocho, a favourite cafe in Wakefield, is this knitted collage. It's attached to a railing surrounding a silver birch.
I've no idea who 'knitting ninja' is; but they've created a lovely 'art intervention', of knitted foods, in the main precinct, close to the Cathedral. It adds a much-needed splash of colour in this grey winter light. I like the idea; public art created and installed by the 'public'! Good work, knitting ninja, whoever you are!
I wonder if there are more of these, adorning the streets of Wakefield? I'll keep a lookout.