יַנְשׁוּף yanshûwph (H3244)

an unclean (acquatic) bird; probably the heron (perhaps from its blowing cry, or because the nightheron is meant ))

1) great owl, eared owl 1a) an unclean animal

or יַנְשׁוֹף; apparently from נָשַׁף (H5398); (compare נֶשֶׁף (H5399))