(Portland, OR) -- The Oregon Zoo has two tiny, fluffy new residents. Two Humboldt penguins hatched about a week apart last month. Humboldt penguins typically hatch 40 days after the eggs are laid. Zoo officials say both sets of parents nested "wonderfully" and the chicks hatched right on schedule. The babies will be nearly as tall as their parents by summer, but won't develop the distinctive black-and-white tuxedo markings for a couple of years.