Rashi on Leviticus 11:17/רש"י על ויקרא י״א:י״ז

1שלך — Our Rabbis explained that this is a bird that draws up (שלה = שלך) fish out of the sea (Chullin 63a) and that is why Onkelos translates it by ושלי נונא “and that which draws up fishes” (a common heron; according to others a kind of pelican).

2כוס וינשוף — These are chouettes in O. F. that shriek at night (kinds of owl), and have their cheek-bones formed like those of a human being; and there is another bird similar to it which is called hibou in O. F.