 The eggs were small compared to the size of the mother (the "Mrs T" specimen weighed between and ), also more like modern reptiles than birds.David Unwin, a co-author of the paper, suggested that "Darwinopterus" probably laid many small eggs at a time and buried them, and that juveniles could fly upon hatching, requiring little to no parental care.These results imply that reproduction in pterosaurs was more like that in modern reptiles and significantly differed from reproduction in birds.