Page 123 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)

Like many other theropods, Citipati had long arms equipped clutches of eggs, with their arms spread out to the edges
with feathers similar to the flight feathers of bird wings. But of the nest. In this position, their long feathers would have
Citipati clearly could not fly, because its “wings” were far too covered the eggs, keeping them warm or shading them from
short. The feathers must have had another function, and the scorching desert sunshine. But feathers could not protect
several fossils found in the Gobi Desert show what that might Citipati and its eggs from whatever killed, buried, and
have been. The animals are preserved crouching on top of preserved them as fossils beneath the desert sand.

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