The Wren

A wren took a bath in a puddle next to a curb. It was a perfect puddle. The wren, Susan, came back to this puddle often. One day, a Danish fellow offered a design that did away with curbs on streets which, in theory, would allow safer traffic.
Finding her puddle gone due to reconstruction, Susan was very upset. She flopped in a phantom puddle, not unlike the birds who take dirt baths. She disillusioned herself into being clean and flew home to her nest and then to a wire perch where another bird named Joseph noticed her smell and dirty crest and took pity on her. This caused an incline in the evolution of wrens.
Epilogue: They had sex in the rain. And she made an egg that looked like this.