Assertion: mockingbird | /r/CapableOf | change side
Facets:
value: at 3 or 4 khz
type: TEMPORAL
value: between the tones in each pair
type: OTHER
Source sentences:
text: Why then did the mockingbird change sides between the tones in each pair?
text: When as an adult, the mockingbird mimicked the synthesized cardinal-like FM sweeps, it sang the high frequency portion on its right side and the low frequency portion on its left, switching sides at 3 or 4 kHz, during both upward and downward sweeping sounds (Fig. 9.7; CD1 #70).