Watch astonishing tests of avian aptitude: parrots that can plan for the future, jackdaws that can “read” human faces, and crows that can solve multi-step puzzles with tools like pebbles, sticks, and hooks. Could these just be clever tricks, based on instinct or triggered by subtle cues from their human handlers?
Las reseñas aparecerán aquí una vez que los miembros compartan sus opiniones.
Aún no hay música
Añadir banda sonora
