What are the differences between penguins & birds?

They have sleek, extended physiques that decrease in thickness at the top and bottom portions of their bodies alike. Penguins also possess inconspicuous necks and sizable heads. Their bodies are designed for swimming success. While penguins' body shapes are similar, their sizes drastically differ. read more

Little penguins (Eudyptula minor) are the opposite -- the tiniest. Mature little penguins usually weigh a little more than 2 pounds. King penguins (Aptenodytes patagonicus) usually weigh between 30 and 35 pounds. Gentoo penguins (Pygoscelis papua) typically weigh in the ballpark of 12 to 14 pounds. read more

But between the two, there are also some similarities. Both the differences and similarities will be explained in this report. A penguin is, as most people know, a flightless bird which lives mainly in colder climates of the southern hemisphere. read more

In a similar flub, penguins received their name after being confused with a now extinct bird called the great auk. The great auk's scientific name, Pinguinus impennis, comes from the Latin word "pinguis," which means "fat." From that, the chubby penguin received its name [source: Gaskell]. read more