taux (1) Communication (1) Claws (1) Wings (Anatomy) (1) Will (1) Process (Law) (1) Play (1) Parents (1) Owls (1) Negotiation (1) Hunger (1) Gesture (1) Foot (1) Farm produce (1) Experiments (1) Exchange (1) Competition (1) Communication (1) Brothers and sisters (1) Barn owl (1) Attention (1) Animals (1) Nests (1) Will (1) Vocalization (1) Movements (1) Transmission (1) Behavior (1) Nests (1) Experiments (1)