bird wiki:
>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 8,800â10,200 living bird species (plus about 120â130 that have become extinct in the span of human history) in the world, making them the most diverse class of terrestrial vertebrates.
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antenna wiki:
>In biology, antenna (plural: antennae) refers to the sensing organs of several arthropods.In electronics, antenna (plural: antennas) refers to the component designed to send and receive radio waves - also called an aerialAntenna, also known as ANT1, is a Greek-language terrestrial channel.In astronomy, The Antennae is the name of two colliding galaxies NGC 4038 and NGC 4039.In astronomy, antenna may be a reference to a radio telescope.
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