leviticus 11:19 And the stork, the heron after her kind, and the lapwing, and the bat. - Free Bible Online

      19. the stork--a bird of benevolent temper and held in the highest estimation in all Eastern countries; it was declared unclean, probably, from its feeding on serpents and other venomous reptiles, as well as rearing its young on the same food.
      the heron--The word so translated only occurs in the prohibited list of food and has been variously rendered--the crane, the plover, the woodcock, the parrot. In this great diversity of opinion nothing certain can be affirmed regarding it. Judging from the group with which it is classified, it must be an aquatic bird that is meant. It may as well be the heron as any other bird, the more especially as herons abound in Egypt and in the Hauran of Palestine.
      the lapwing--or hoopoe; found in warm regions, a very pretty but filthy species of bird. It was considered unclean, probably from its feeding on insects, worms, and snails.
      the bat--the great or Ternat bat, known in the East, noted for its voracity and filthiness.

JFB.