Theodoret of Cyrus
Moses identifies certain birds as unclean, specifically those that feed on carrion and thrive in darkness. This serves as a lesson for us to reject greed, detest the foulness of sin, and loathe the shadows.
And the swan, and the bittern, and the porphyrion.
וְאֶת־הַתִּנְשֶׁ֥מֶת וְאֶת־הַקָּאָ֖ת וְאֶת־הָרָחָֽם׃
One Church Father comments on this verse
Moses identifies certain birds as unclean, specifically those that feed on carrion and thrive in darkness. This serves as a lesson for us to reject greed, detest the foulness of sin, and loathe the shadows.