(JTA) — As the omicron variant of the coronavirus spreads across Israel, scientists in the country are worried about a new infectious disease threat: an avian flu that has killed thousands of wild birds migrating through Israel in the past month and has already spread to Israeli poultry farms. Thousands of crane carcasses from birds infected with the disease have been found at the Hula Lake Reserve in the north of Israel, which becomes a major site for migrating birds to feed as they fly through the country twice each year. The Israeli government is now killing off thousands of...