Rooftop Shoe-birdfeeder: Surprise Party
Over time, it was interesting (and surprising) to watch other feathered friends arrive - House Finch, White-crowned Sparrow, California Towhee, California Scrub-Jay and even the American Crow.
However, over the rainy season, I discovered and learnt more about the "poop-shrooms" - Phycomyces. The shoe-birdfeeders turned pretty soggy and dirty very quickly, to a point I had to get rid of them. Still, the experiment was great while it lasted.