Marty’s photo of the day #2759: Here are father and son gentoo penguins that I photographed on a foggy Antarctica day. How do I know it’s a father and son? Over the years I have posted many “mother and daughter” and “mother and son” animal photos I’ve shot around the world. So this time, to be fair, I’m declaring the adult to be a male. Since male penguins take an active role in rearing their babies, I just might be right.