The sounds produced by male reindeer probably tell potential mates a lot about the caller: their age, size and weight. These are all important considerations for a female during the rut, according to a new Concordia-led study. The sounds produced by male reindeer probably tell potential mates a lot about the caller: their age, size and weight. These are all important considerations for a female during the rut, according to a new Concordia-led study. Plants & Animals Ecology Phys.org – latest science and technology news stories