Sowell's short-tailed bat (Carollia sowellii) flying in Belize. Photo Credit: Brock Fenton. A close relative (Carollia perspicillata) was studied in the paper “Spring or string: does tendon elastic action influence wing muscle mechanics in bat flight?” by Konow et al, published in Proceedings of the Royal Society B (http://dx.doi.org/10.1098/rspb.2015.1832)