flightless bird species

Birds
How many species of birds can fly backwards?
1
Birds
What percentage of birds are flightless?
0
Birds
How many flightless birds are there?
9
Birds
How many birds are there that can’t fly?
15
Birds
Which bird is the smallest among?
45
Birds
What is the only bird that can’t fly?
49
Birds
What are non flying birds called?
69
Birds
Are there any flightless birds?
51
Birds
What are the two examples of flightless bird?
55