Theodoret of Cyrus
Moses refers to scavenging birds as unclean, as they feast on carrion and thrive in darkness, illustrating for us the importance of rejecting greed, repulsing the foulness of sin, and despising the shadows.
The screech owl, and the cormorant, and the ibis.
וְאֶת־הַכּ֥וֹס וְאֶת־הַשָּׁלָ֖ךְ וְאֶת־הַיַּנְשֽׁוּף׃
One Church Father comments on this verse
Moses refers to scavenging birds as unclean, as they feast on carrion and thrive in darkness, illustrating for us the importance of rejecting greed, repulsing the foulness of sin, and despising the shadows.