Eric Walker added Can Crows Make Mental Pictures of Tools? - The New York Times to New Caledonian crows

Eric Walker added New Caledonian crow - Wikipedia to New Caledonian crows

Eric Walker added Can Crows Make Mental Pictures of Tools? - The New York Times and New Caledonian crow - Wikipedia to New Caledonian crows, and added New Caledonian crows to Crows

Eric Walker added New Caledonian crows and a number of links to Crows, and added Crows to Corvidae