The population of migratory birds worldwide is in danger of collapsing unless their habitats are taken better care of and climate change is addressed.

That’s the view of Borja Heredia, head of the avian unit at the UN Convention on Migratory Species.

Speaking on World Migratory Bird Day, marked each May 10, he said that “we have to do something” to prevent birds making epic journeys from north to south at this time of year, from simply disappearing.

In a nod to the 2030 Sustainable Development Goals, this year’s theme links the future of people to the survival of birds.

Matthew Wells asked Mr Heredia why it was so important to draw attention to the issue.

Duration: 2’40”