PhysOrg Posted March 21, 2016 Share Posted March 21, 2016 The Scottish bird population of red-billed choughs, which currently totals less than 60 breeding pairs and is of major conservation concern, is being affected by lethal blindness that is passed on by non-blind individuals that carry a mutant gene. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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