De Gregorio and colleagues analyzed recorded calls produced by 51 indri lemurs (Indri indri) in five rainforests across Madagascar. Over 15 years the researchers gathered this singing data.

The secretive indri (Indri indri) of Madagascar is the largest living lemur. It is also critically endangered and highly evolutionarily distinct with no close relatives, a combination that makes ...

Russ Mittermeier The indri is the largest lemur species and is known locally as a babakoto, which means 'man of the forest' There are 111 known species and subspecies of lemur, all endemic to ...

It is one of the best places to spot the largest lemur, the indri. The eerie calls of these animals often give away their location in the forest canopy. Also look out for other lemur species ...

Image by Jess Webster. An indri lemur watches over its forest home in Eastern Madagascar To capture the story of one of the forest’s most unusual inhabitants, the BBC team ventured into the ...