context: It has been possible to teach a migration route to a flock of birds, for example in re-introduction schemes. After a trial with Canada geese Branta canadensis, microlight aircraft were used in the US to teach safe migration routes to reintroduced whooping cranes Grus americana.
question: কোন পাখিদের তারা ট্রায়াল রান হিসেবে ব্যবহার করেছিল?
answers: Canada geese