by Andrzej | Mar 16, 2013 | Animals | 1 |
by Alex | Feb 21, 2011 | Amazing, Animals, Nature | 1 |
Birds (class Aves) are feathered, winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals. There are around 10,000 living species, making them the most speciose class of tetrapod vertebrates. They inhabit...
by Alex | Feb 15, 2011 | Animals, Funny | 4 |