I have been exploring dimorphic tessellations for the past couple of months and following my Twitter post on the subject created the goose motif. It appears to tessellate the plane as D1gg and D1Kg but I am not certain these are the correct groups. Please comment if you know for certain. I started with a "J" shaped tile which was based generally on the shape of Bermuda. After several iterations it became a more refined shape and I made a cut out cardboard model to make it work. There are three figures below; the first figure is the final design on graph paper; the second two images are of the motif tiling the plane. All three figures are watercolor, pen and ink and colored pencil.
Michael Wilson has been creating tessellation art for over 40 years and is preparing this blog to share thoughts on the subject.