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Page Title
Bird communication
Stripped Text Content
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"
BIO 554/754
Ornithology
Vocal Communication
Birds
produce a variety sounds to communicate with flock members,
mates
(or potential mates), neighbors, & family members. These sounds
vary
from short, simple call notes (and short, simple songs like those of Henslow's Sparrows) . . .
Henslow's Sparrow
(with an occasional 'buzzy' song of a Grasshopper Sparrow in the background)
. . . to surprisingly long, complex songs (e.g., the Superb Lyrebird ).
Superb Lyrebird
Sometimes
birds generate sounds by using substrates (like woodpeckers )
or special feathers (like American
Woodcock ) or special wings (like manakins) .
Neat video of a Red-capped Manakin ( Pipra mentalis ) using its wings to generate sound.
Male Anna's Hummingbirds use their tail feathers to generate sound.
Most sounds, however, are produced by the avian vocal organ,
the
syrinx.
House Wren singing
Common Loon calling
Source:
http://trc.ucdavis.edu/mjguinan/apc100/modules/
Respiratory/airways/syrinx/syrinx.html
The syrinx is located at the point where the trachea branches into
the
two primary bronchi. According to one model of syrinx function, sound
is
generated when:
contraction of muscles (thoracic & abdominal) force air from
air
sacs
through the bronchi & syrinx
the air molecules vibrate as they pass through the narrow
passageways
between
the external labia & the internal tympaniform membranes (or, as in
the diagram above, ty"
....
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