Question

Difference between running and flyning birds

Answer 1

1) Flying birds are smaller in size than flightless birds. 2) Wings of flightless birds are poorly developed as compare to flying birds. 3) Tail quills are present in flying birds while it is absent in flightless birds. 4) Flying birds have well developed fight muscles as compare to flightless birds.

The Emu grows up to 1.9 meters (6.2 ft). Contrary to this, Ostrich has an average height of around 6-9 feet. Emu has the capability to run at the speed of around 50 Kilometers per hour. On the other hand, Ostrich are the fastest running bird which can run up to 40 miles per hour (65 kilometers).

Answer 2

Flying birds are called Carinatae, whereas running birds are called Ratitae.

The difference between the flying birds and running birds are as follows:

• Flying birds are generally small birds, but running birds are large.
• The wings of flying birds are very well developed, the wings of the running birds are poorly developed.
• There is an interlocking mechanism in the feathers of the flying birds but this is absent in running birds.
• Tail quills are present in flying birds but it is not found in running birds.
• Oil gland is present in flying birds where it is absent.
• The flight muscles are highly developed but the development is reduced in running muscles.
• Flying birds have short legs whereas the running birds have long and stout legs.
• Copulatory organ is present in flying birds, it is absent in running birds.
• The young ones of flying birds are naked (altricial) without feathers, and the young ones of running birds have feathers (precocious).  
• Example of flying birds: crows, parrots.
• Example of running birds: Kiwi, penguin.

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