sprawl

card 1 of 9 · context meaning

Which meaning of 'sprawl' best matches its use in the sentence?

The hatched young ones are sold to those who breed them up, and these try in the following manner whether they are hatched too soon or not: they take hold the little ducks by the bill, and their bodies hang down; if they sprawl and extend their feet and wings, they are hatched in due time.