Onon the cuckoo has made one of the longest migrations recorded by any land bird

Khurkh valley

in Mongolia

Outward

journey

Return

journey

Beijing

New Delhi

Dhaka

Addis Ababa

Nairobi

Onon left Mongolia last June and flew a 26,000km round trip with 27 border crossings in 16 countries

Zambia

3,000 km

3,000 miles

Khurkh valley

in Mongolia

Beijing

Outward

journey

Return

journey

New Delhi

Dhaka

Asmara

Addis Ababa

Mogadishu

Nairobi

Onon left Mongolia last June and flew a 26,000km round trip with 27 border crossings in 16 countries

Zambia

2,000 km

2,000 miles