Way back when, in 1998 or so, a friend gave me the decorative tiles that she had picked up for me on one of her travels. Of course, they became the above mosaic. The substrate is cement board and I used thin set as both adhesive and grout. The mosaic has been hanging outside since then. I probably brought it in a couple of winters, but have not for years. It has held up very well.
A couple of weeks ago, I was sitting on the porch in the late afternoon and noticed something wedged between the top of the mosaic and the pergola beam. I took a closer look but could not discern what it was. I thought it was some kind of cocoon or something. Early the next day, I went out with a step ladder to take a closer look, but it was gone.
Yesterday afternoon, my husband and I were out on the porch and I saw it again. He, being taller than I, was able to get a closer look and discern what it was. He took a good close-up pic.
Can you tell what it is yet? Here’s another: