Are penquins birds or mammals?

United States
November 14, 2006 7:10pm CST
Are penquins birds or mammals?
2 responses
@manzician (4734)
• India
15 Nov 06
They are Birds
@shasha13 (134)
• United States
15 Nov 06
Penguins are birds. All birds have an outer covering of feathers, are endothermic (warm-blooded), have front limbs modified as wings, and lay eggs