![]() The UMN research team studied raptors admitted to the university’s Raptor Center for treatment and worked with Sia: the Comanche Nation Ethno-Ornithological Initiative in Cyril, Oklahoma, to assess eagle hearing ranges. ![]() University of Minnesota: Eagles Can Hear Frequencies Ranging Across Four Octaves The Purdue research team concluded that these types of signals would be good candidates for further testing with bald eagles-but that deterrents for golden eagles should be complex tonal harmonics or modulated sounds that do not change very rapidly.
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