Why can eagles soar through the skies while emus are bound to the earth? One secret lies in a skeletal structure called the keel, a blade-like ridge on the breastbone that anchors the flight muscles ...

A groundbreaking study, published in iScience in 2021, revealed new insights into the evolutionary link between birds and dinosaurs. The discovery of Baby Yingliang, an exceptionally well-preserved ...

A study from Kyushu University reveals how the timing of a key developmental signal shapes differences in bird breastbone formation and flight ability, deepening understanding of skeletal evolution.