"That I create for you from clay," meaning: I fashion [from clay] "the likeness of birds," meaning: the resemblance of birds.
﴿أَنِّي أَخْلُقُ لَكُمْ مِنَ الطِّينِ﴾ أَي: أُصَوِّرُ [من الطين] ﴿كَهَيْئَةِ الطير﴾ كَشَبَهِ الطَّيْرِ.