manualy bird doodle art with earth yellow background

[hree-letter%20acronym">three-letter acronym that can mean:Adaptive resonance theoryAdvanced Rapid Transit metro technologyassisted reproductive technologyAnaheim Resort TransitIATA airport code for Watertown International AirportISO 639 alpha-3 code for otherwise unassigned artificial languagesThe National Rail code for Arrochar and Tarbet railway station, United Kingdom. External links: ; ; . Antiretroviral therapy. It is used in the treatment of HIV infection. See more at Wikipedia.org...]

>For other uses, see Bird (disambiguation). Many - see section below. Birds are bipedal, warm-blooded, egg-laying vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. Birds range in size from the tiny hummingbirds to the huge Ostrich and Emu. Depending on taxonomic viewpoint, there are about 8,800–10,200 living bird species (plus about 120–130 that have become extinct in the span of human history) in the world, making them the most diverse class of terrestrial vertebrates. See more at Wikipedia.org...

e first appeared in the early seventeenth century to mean a fool or simpleton, and is thought to derive from the Low German "dudeltopf", meaning "fool" or "simpleton". This in turn resulted in the early eighteenth century verb "to doodle", meaning "to swindle or to make a fool of". The most common modern meaning, an aimless drawing while a person's attention is otherwise occupied, emerged in the 1930s either from this meaning or from the verb "to dawdle", which since the seventeenth century has had the meaning of wasting time or being lazy. See more at Wikipedia.org...