Hornbills' Beaks Act as Thermal Radiators

In my latest PLOS Ecology blog post, I discuss new research that shows large beaks, like those of hornbills and toucans, help birds keep cool in high temperatures. As an alternative to panting, these birds can dilate and constrict blood vessels in their beaks to lose heat. Read the whole story here: Hornbills' Giant Beaks Help Them Keep Cool in Desert Heat.