• There are about 10,000 living species of birds.
  • Almost all of them can fly, but there are several exceptions.
  • Flightless birds include the ostrich, kiwi, rhea, cassowary, and moa.
  • The most common orders include landfowl, waterfowl and nocturnal raptors.
  • There are also flightless birds, birds that live near water, and parrots.
  • The order of perching birds has more species than all the other bird orders combined.
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