Maiasaur nest model; photo by Drow – GFDL,

A shallow, warm sea reflects sunlight in the distance. Here on the shore, a flat beach is backed by low hills. The hillsides are home to dozens of large, circular depressions approximately six feet across. These are nests, and the assemblage is a rookery.

Some nests still contain eggs, others have young in residence. The nestlings have been here a while, hanging out with the their parents, who in turn provide both food and protection. (more…)