countershading | | process during which a penguin loses and replaces its feathers |
seventeen | | this penguin species lives along the equator |
krill | | main food item for antarctic penguins |
regurgitation | | form of camoflage used by penguins |
nictitating | | young penguins huddle together in these for warmth |
spheniscidae | | all penguins belong to this family |
molting | | how the parent penguins feed their chicks |
solid | | unlike most birds, penguins have _____ bones |
galapagos | | period during which the parents keep the eggs warm |
incubation | | number of penguin species living on earth |
southern | | the clear membrane protecting a penguin's eyes |
gestation | | all penguins live in this hemisphere |
blubber | | period during which the eggs grow inside the female penguin |
creches | | penguins have a layer of this under their skin for warmth |