Is penguin parenthood planned? Let's scan their plan. It's 60 below in the rookery 60 miles inland where a pair of passionate penguins yield to the impulse to populate Antarctica. He incubates while she peregrinates, waddling back to the ocean (they are flightless) to feast on seafood (their only fare). Two months later she's back to feed their newborn by regurgitation, but no doggy bag for daddy. He waddles weakly away from fast to feast, 60 miles to go at 60 below. Cool plan - for sub-zero population growth.