Birdy dance

For no particular reason I was thinking about how I had noticed that some birds hop and others walk.  I'm sure someone will have written a thesis on modes of avian perambulation, but I'm just going on what I have noticed.  Which is that small birds hop and big birds walk.  So I wonder at what size they stop hopping and start walking.  Wrens, robins and chaffinches hop.  Starlings, blackbirds and pigeons walk.

Anyway, when I opened my front door this morning I had been visited by two birds, which I think are a blackbird and a wren because they're always hanging around at the front, and their footprints were there on my front step right next to each other  The smaller one clearly hops (feet side-by-side) and the larger one walks (feet alternate, one in front of the other).  Just nearby I noticed the blackbird had taken a sudden swerve, which put me in mind of the diagrams you can use for learning to dance.  So I put together a collage just to amuse myself.