Birds chase microlight in bizarre migration

Help

A team of researchers is teaching the critically endangered northern bald ibis a 1,300km flight across Europe - by getting them to follow a microlight.

During one leg of the migration, Dr Johannes Fritz from the Waldrapp team, explains how how the process works.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.