A study finds that carrion crows can be taught to count and make vocalizations that indicate the number counted, much in the same way that human toddlers do.
birds
Posted inNPR
‘Chimney caps, vent pipes, gutters’: Why some woodpeckers are major metal heads
When an NPR reporter heard a startling loud metallic noise in her house, she was about to get an interesting lesson in animal behavior.
