Early one morning in Spring he flapped his strong wings and tucked his wet webbed feet up close to his body and stretched out his long neck and calling "quonk-quonk!" he flapped away to the north.    From Wordnik.com.  [Here and Now Story Book Two- to seven-year-olds] Reference

"quonk-quonk-quonk!".    From Wordnik.com.  [Here and Now Story Book Two- to seven-year-olds] Reference

"quonk-quonk!" he would call.    From Wordnik.com.  [Here and Now Story Book Two- to seven-year-olds] Reference