E: Demonstrator hens altered their behavior less obviously in response to noxious foods than in response to highly palatable foods.
the above behavior is shown by observer hen and not the demonstrator hen hence E is wrong.
But Sherwin's recent experiments with domestic hens do not support the notion that avian social learning necessarily facilitates aversion to novel foods that are noxious or toxic.
Even when demonstrator hens reacted with obvious disgust to a specific food, there was no evidence
...
the above behavior is shown by observer hen and not the demonstrator hen hence E is wrong.
But Sherwin's recent experiments with domestic hens do not support the notion that avian social learning necessarily facilitates aversion to novel foods that are noxious or toxic.
Even when demonstrator hens reacted with obvious disgust to a specific food, there was no evidence
...




