Besides the obvious- the HUGE difference in size- hummingbirds fly. Ostriches do not. They have a very different diet. Hummingbirds migrate each year, ostriches do not.
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Humming bird eats food which is more than its weight.
Through DNA, we can understand more about the humming-bird and its differences.
An ostrich, they can run at more than 30 miles per hour.TRhe fastest running bird is the Ostrich, they can run at more than 30 MPH.TRhe fastest running bird is the Ostrich, they can run at more than 30 MPH.
humming bird
An ostrich is a large, flightless bird native to Africa. More information can be found here: http://en.wikipedia.org/wiki/OstrichA large bird that can run speeds up to 70km constantly for around 30mins. see www.stevethepro.ukf.net/ostrichpower/info.htm for more info
raven, humming bird, roben, blackbird, . there are way more though.
just like a bird; maybe a little more rough
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Beatles, worms, and a lot more, grasshoppers....
An ostrich is a bird. A banana is a fruit. Need I say more?
Rhea
The largest living bird is the ostrich (Struthio camelus), a flightless ratite species. An adult ostrich can be up to 9.2 feet (2.8 m) tall and weigh up to 340 pounds (155 kg). An ostrich EGG can weigh up to 3 pounds (1.4 kg), more than most of the world's birds.Although unable to fly, ostriches can run at up to 45 mph (70 kph), faster than any other bird.