This rare plural form in Job 39:13 likely refers to ostriches, identified by their distinctive loud calls. The Hebrew literally means 'birds of piercing cries,' and most interpreters follow the Vulgate in understanding this as ostriches. However, textual difficulties surround this verse, and some scholars suggest reading 'ye'enim' (ostriches) as in Lamentations 4:3, treating the current form as a scribal variant. The Spanish 'avestruces' confirms the traditional ostrich identification.