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.
పునర్వినియోగ పథకం అంటే ఏమిటి?
to teach a migration route to a flock of birds