Medicine & TechnologyIn the study of ecology, it’s long been known that animals have a sort of sixth sense above and beyond what humans can perceive. Perhaps through the aid of their keen senses of smell or their abnormally acute sense of hearing, animals such as dogs are able to sense the presence of cancers, the onset of seizures, and even changes in the climate. But in a new study led by UC Berkeley ecologist Henry Streby, it’s birds that are sensing a change. Golden-winged warblers to be exact.