In shrinking grasslands, crane parents must work together to protect their eggs from unexpected dangers. As livestock move closer, both parents are forced to act in defense of their future chicks — ...

But Shadow and Jackie, two bald eagle parents, showed why they are world-class parents and heroes during a recent windstorm ...

Male emperor penguins carefully balance a single egg on their feet, protecting it from the ice while enduring temperatures that can fall below −60°C. To survive the freezing winds, they gather ...

Scientists reveal how oviraptor dinosaurs used sunlight and body heat to hatch eggs and why their nesting method differs from ...

Why did our ancestors ditch the shell and start growing babies inside their bodies instead? In this episode of Big Ideas, ...