She is hardened against her young ones, as though they were not hers: her labour is in vain without fear;
On a slight noise often she forsakes her eggs, and returns not, as if she were 'hardened toward her young.'
Her labour - in producing eggs, is in vain, (yet) she has no disquietude (about her young): unlike other birds, who, Her labour - in producing eggs, is in vain, (yet) she has no disquietude (about her young): unlike other birds, who, if one egg and another are taken away, will go on laying until their full number is made up.