A new study describes the discovery of what are believed to be scrapes created by dinosaurs; scrapes are a common part of mating rituals among modern birds where the males show their strength to potential mates by digging.

Research is shedding light on an important but previously unknown aspect of dinosaurs’ lives--their mating rituals.
A new study describes the discovery of sites known as “scrapes” in parts of Colorado where dinosaurs are believed to have been.
These scrapes have been compared to the behavior of modern birds where, according to the press release, “males show off their ability to provide by excavating pseudo nests for potential mates.”