Concept:Different birds have different characteristics.All have different beaks, necks feathers, eyes etc.Explanation:Mynah:Mynah birds are species in the family starlings. Mynah is best known for their ability to talk and to mimic any sounds.Mynah found in Africa, India, and Southeast Asia.In India Mynah known as Maina. Mynahs are medium in height and have sturdy feet.They can move their head backwards with a jerk.?Thus, the bird which can move its neck back and forth with a jerk is Mynah.Additional InformationOwl:An owl is a nocturnal bird, which means it sleeps during the day and is awake at night. Owls are carnivores. They eat rodents, small and medium-sized mammals, insects, fish, and other birds.Owls can rotate their neck back up to 270 degrees.Owl can move its neck backwards to a large extent.??Crow:They are the most common birds.They are black-greyish in colour.They bob their head.?Koel:They are the cuckoo birds of India.They are known for their sweet songs.They lay eggs in other birds nest.They are blackish-bluish in colour.They cannot move their neck backwards to a large extent.?