Crows have an unspoken motto: Sticks and stones may break my bones, but they sure can come in handy. Two new studies unveil the ability of at least some crows to use tools in sophisticated ways, without training, to obtain food.
PICK-UP STICKS A New Caledonian crow dubbed Uek, shown wielding twigs in these images, participated in new experiments showing that these birds can use up to three wooden implements in the correct sequence to reach a piece of otherwise inaccessible food.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.
