In 2012 a new concrete bridge was constructed to cross the Ivon river south of Riberalta. The bridge is now the home of at least 40 bats tentatively identified as Phyllostomus hastatus.
Edit: A comment from another ¡naturalist user made me aware I included pictures of another species of bat (Carollia probably). I thus eliminated this picture from this observation and uploaded it separately, while including more pictures.