The Bird (or is it a fox?)

An idea often develops itself – or it certainly feels that way. An idea is most vocal when you return to it. When I shared this artwork on twitter, I wondered whether it was like the blank tile in a game of Scrabble, where I get to dictate how you see it. But Amy Burvall reckoned it looked like a fox, and I think fox > bird… How do you see it?