I was removing the dirt from a failed strawberry pot and out came all these little flower-tubes. At first because of the bright colors I thought they were old fake flowers that found their way into the potting mix somehow, but then I looked closer and saw they were little bee nests made of bougainvillea. Out here in Phoenix, our native bees are solitary bees that build little tubes out of cut up leaves and flower petals and put them into small cracks or holes. For whatever reason a bunch of them thought my strawberry pot was a good location. I'm making a bee house (a chunk of wood with holes drilled into it) and I'm going to transfer these and hopefully attract more.
You can see from the pictures that they make a perfectly shaped tube with the bottom sealed off and then it's sealed off above where the eggs are as well. It's hard to believe that a little bee made this. I'm impressed.
The baby chicks should be here in less than a week!