Auditory sensitivity and the frequency selectivity of auditory filters in the Carolina chickadee, Poecile carolinensis

摘要: Chickadees produce elaborate vocalizations, but their basic auditory capabilities remain unexplored. We used brainstem responses to tone bursts assess the sensitivity of Carolina chickadees at frequencies from 0.5 8 kHz and percentage frequency selectivity (quality) filters 2 4 kHz. The high-frequency limit sensitive hearing was relatively high in compared other songbirds tested using same method, while low-frequency similar among species. These results support a previously noted correlation across between maximum vocalizations. increased with increasing frequency. Frequency intermediate species 3 kHz, This pattern suggests that is generally greatest within range long-range communication signals, may be greater woodland than open habitat Greater have evolved for resolution vocal which are tonal species, or better signal detection noise. Finally, males had females, whereas females males. enhance perception difference