And in the forests of northeastern Australia, another great journey spurred by parental dedication is about to begin. On translucent tawny wings, a little red flying fox flaps homeward after a night of intense foraging. And she is one of millions. 

 

 

 

Somehow, she finds her pup in the din of the camp. She wraps him in her nursing embrace. He needs calcium from her milk to build flimsy bones. And he's leaching it away from her own fragile flying machinery at an alarming rate. 

 

 

 

The bats have eaten through the calcium and energy-rich eucalyptus blossoms for miles around. The situation is getting desperate, the need to move intense.