The loss of ice in one region of Antarctica last year likely resulted in none of the emperor penguin chicks surviving in four colonies, researchers reported Thursday. Penguin chicks don't develop their adult waterproof feathers until close to the time they usually fledge, in late December or January, scientists say. Climate change and ice melt is threatening the emperor penguin's breeding grounds. WATCH | Penguin colonies at risk as Antarctica ice melts:Début du widget Widget. Fin du widget Widget.
