Question

ऐसी कौन सी चिड़िया है जिसके सर पर पैर होते है

Answer 1

hey here is ur answer --- every bird has wing leg and head so answer is sari panchi

Answer 2

Sabhi panchiyoke ke sar par pair hote hain. 
The sentence actually means- do all the birds have head(sar), winds(par), and Pair(legs)??
And the answer is yes they do have them all.