BirdsDefinition (http://en.wikipedia.org/wiki/Birds) Birds (class Aves) are feathered, winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals. With around 10,000 living species, they are the most speciose class of tetrapod vertebrates. (Wikipedia) Preferred Units: N/A Scope Note: N/A This term is used for the following terms: N/A Approved Date 29-Nov-2012 Items having a keyword or observed-property relationship to this subject term Click here to give feedback on this term or suggest an update. |