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Lateral dominance of the hypoglossal nerve conveying messages from the brain to the syrinx was first observed in the 1970s. [3] [4] This lateral dominance was determined in a breed of canary, the waterschlager canary, bred for its long and complex song, by lesioning the ipsilateral tracheosyringeal branch of the hypoglossal nerve, disabling either the left or right syrinx.
What makes the hummingbird's syrinx different from that of other birds in the Apodiformes order is the presence of internal muscle structure, accessory cartilages, and a large tympanum that serves as an attachment point for external muscles, all of which are adaptations thought to be responsible for the hummingbird's increased ability in pitch ...
Hyles lineata is one of the most abundant hawk moths in North America and has a very wide geographic range. [4] This range extends from Central America to southern Canada through Mexico and most of the United States. [5] Some regions of South Asia like Sindh, Pakistan are reported to have habitates to these Moths.
The archosaurian shift from larynx to syrinx must have conferred a selective advantage for crown birds, but the causes for this shift remain unknown. [10] To complicate matters, the syrinx falls into an unusual category of functional evolution: arising from ancestors with a larynx-based sound source, the syrinx contains significant functional overlap with the structure it replaced.
Giant hummingbird: Patagona gigas (Vieillot, 1824) 196 Violet-chested hummingbird: Sternoclyta cyanopectus (Gould, 1846) 197 Scissor-tailed hummingbird: Hylonympha macrocerca Gould, 1873: 198 Rivoli's hummingbird: Eugenes fulgens (Swainson, 1827) 199 Talamanca hummingbird: Eugenes spectabilis (Lawrence, 1867) 200 Fiery-throated hummingbird
Vocal learning is the ability to modify acoustic and syntactic sounds, acquire new sounds via imitation, and produce vocalizations. "Vocalizations" in this case refers only to sounds generated by the vocal organ (mammalian larynx or avian syrinx) as opposed to by the lips, teeth, and tongue, which require substantially less motor control. [1]
Due to longstanding pushback and controversial health studies surrounding the ingredient, many processed food manufacturers have already shifted away from using Red Dye No. 3, opting instead for ...
Lyrebirds have three syringeal muscles whereas most other songbirds have four. This could make the syrinx of the lyrebird more flexible. [6] [30] In a study comparing the sonograms of lyrebirds and Australian magpies during mimicking, the author stated that the mimicry of the lyrebird was "impressionistic" while that of the magpie was ...