Question

which are called flight less ​

Answer 1

Answer:

OSTRICHES

Flightless birds are birds that through evolution lost the ability to fly. There are over 60 extant species, including the well known ratites (ostriches, emu, cassowaries, rheas and kiwi) and penguins. The smallest flightless bird is the Inaccessible Island rail (length 12.5 cm, weight 34.7 g).

Answer 2

Answer:

The Birds which cannot fly are called flightless birds

the things which cannot fly are called flightless things