Hold space or your mouse/finger to zoom in and see inside the crack on your deck, where there is a robin nest. Each run will be a little different. Sometimes, you don't get a really good view, but it's part of the process. When the robins mature and fly away, the days unwind and the loop starts over again.
Inspired my a real crack on my deck that has a real robin nest in it, which I observed. Images from Google. See https://scratch.mit.edu/projects/1326948766/ for real observations of this crack.
