صَعْلٌ يَعُودُ بِذِي الْعُشَيْرَةِ بَيْضَهُ كَالْعَبْدِ ذِي الْفَرْوِ الطَّوِيلِ الْأَصْلَمِ
The small-headed male ostrich tends his eggs at Dhu al-ʿUshayrah; the poet likens its appearance to a slave in a long shaggy garment with cropped ears.
Ṣaʿl describes the small-headed male ostrich. Yaʿūdu ... bayḍahu portrays it returning to, or attending, its eggs at Dhu al-ʿUshayrah. The place name anchors the scene in the desert.
The comparison to a person in a long shaggy garment with cropped ears is a period-specific description of appearance. Its social vocabulary belongs to a historical poetic setting and should not be taken as a modern moral standard.