The word Chiruping is misspelled against Chirruping, which is present continuous of "Chirrup"
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Chirruping has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings chi & uping which should not be misspelled with single 'R'
Wrong Spelling:  chi-r-uping 
Correct Spelling:  chi-rr-uping 
Check more misspelled words of Chirruping to spell it correct.