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What are the features peculiar to ratite...

What are the features peculiar to ratite birds ? Give two examples of ratite birds.

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1. These are modern flightless running birds.
2. They are .discontinuous. in their distribution like the lung fishes and marsupials.
3. They are characterized by the presence of reduced wings.
4. Feathers are without interlocking mechanism.
5. Rectrices are absent or irregularly arranged.
6. Prren gland is absent.
7. Pygostyle is rudimentary or absent.
8. Sternum is raflike without keel.
9. Clavicles are absent syrinx is absent. br> 10. Male animal has a penis.
11. Young ones are precocial.
Ex : Struthio camelus - (African ostrich), Dromaeus (Emu) Kiwi.
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  14. What are the features peculiar to ratite birds ? Give two examples of ...

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