The Wilson Journal of Ornithology,
Journal Year:
2022,
Volume and Issue:
134(1)
Published: April 27, 2022
Birdsong
is
commonly
associated
with
sexual
selection.
It
can
influence
mate
choice
through
honestly
signaling
the
emitter's
quality.
Such
quality
may
be
reflected,
among
other
factors,
in
body
condition
and
bite
force.
The
Green-winged
Saltator
(Saltator
similis)
a
good
model
species
to
assess
such
relationships
because
males
defend
their
territories
throughout
year
sing
stereotyped
song,
which
known
objective
of
this
work
song
structure,
vocal
individuality,
possible
fitness
indicators
(body
condition,
morphology,
force)
captive
male
Saltators.
We
conducted
linear
discriminant
analysis
(LDA)
individuality
highlight
principal
acoustic
variables
it.
Y-Aware
PCAs
evaluate
relationship
between
index,
force,
morphometric
bioacoustic
variables.
variables,
particularly
head
width
length,
explained
23%
force
variation.
variation
36.17%
index
variation,
but
small
nonsignificant
amount
(12%).
From
peak
frequency
high
last
syllable,
slope
first
emission
rate
showed
significant
negative
condition.
LDA
based
on
had
97.47%
accuracy,
although
result
might
also
reflect
regional
dialects.
most
relevant
individual
classification
(first
syllable
duration,
whole-song
slope,
duration)
are
not
same
that
stronger
Besides
that,
there
weaker
mixed
signaling,
as
related
modulations
were
important
both
contexts.
Our
results
suggest
act
an
honest
signal
individual's
species.
Philosophical Transactions of the Royal Society B Biological Sciences,
Journal Year:
2025,
Volume and Issue:
380(1920)
Published: Feb. 27, 2025
Respiration
plays
a
central
role
in
avian
vocal
behaviour
by
providing
the
airstream
that
induces
vibration
of
folds.
In
this
role,
respiratory
movements
dictate
coarse
temporal
pattern
song,
while
simultaneously
fulfilling
its
vital
functions.
Whereas
these
aspects
have
been
investigated
oscines,
little
information
exists
other
taxa.
Broad
taxonomic
is,
however,
necessary
for
addressing
questions
regarding
evolutionary
specializations
system.
Acoustic
recordings
unstudied
taxa
suggest
rapid
action
muscles
is
basal
trait
within
birds.
addition
to
controlling
timing
vocalization,
activity
also
influences
acoustic
features
such
as
sound
amplitude
and
frequency.
The
latter
more
strongly
influenced
driving
pressure
non-vocal
learners.
Singing,
highly
dynamic
presents
an
opportunity
studying
detailed
ventilation
patterns
thus
could
give
insight
into
basic
control
airflow
lung–air
sac
Although
we
learned
many
details
how
tied
cortical
song
control,
open
remain.
Control
pacemaker
circuitry
upstream
centres,
input
initiation
vocalization
use
online
feedback
from
system
are
all
incompletely
understood.
This
article
part
theme
issue
‘The
biology
system’.
Biological reviews/Biological reviews of the Cambridge Philosophical Society,
Journal Year:
2021,
Volume and Issue:
96(4), P. 1135 - 1159
Published: March 2, 2021
Animals
produce
a
wide
array
of
sounds
with
highly
variable
acoustic
structures.
It
is
possible
to
understand
the
causes
and
consequences
this
variation
across
taxa
phylogenetic
comparative
analyses.
Acoustic
evolutionary
analyses
are
rapidly
increasing
in
sophistication
such
that
choosing
appropriate
approaches
increasingly
difficult.
However,
correct
choice
analysis
can
have
profound
effects
on
output
inferences.
Here,
we
identify
address
some
challenges
for
growing
field
by
providing
roadmap
quantifying
comparing
sound
context
researchers
broad
range
scientific
backgrounds.
Sound,
as
continuous,
multidimensional
trait
be
particularly
challenging
measure
because
it
hard
variables
compared
also
no
small
feat
process
analyse
resulting
high-dimensional
data
using
subsequent
analysis.
Additionally,
terminological
inconsistencies
role
learning
development
traits
need
considered.
Phylogenetic
their
own
sets
caveats
consider.
We
provide
set
recommendations
delimiting
signals
into
discrete,
comparable
units.
present
three-stage
workflow
extracting
relevant
data,
including
options
multivariate
dimensionality
reduction
compatible
then
summarize
available
how
they
been
used
bioacoustics,
limitations
behavioural
data.
Lastly,
recommend
apply
these
methods
study
systems.
In
way,
an
integrated
framework
aid
quantitative
cross-taxa
animal
addition,
advocate
standardization
terminology
disciplines
taxa,
adoption
automated
feature
extraction,
establishment
strong
archival
practices
recordings
Combining
our
proposed
will
greatly
advance
reproducibility,
biological
interpretation,
longevity
bioacoustic
studies.
BMC Evolutionary Biology,
Journal Year:
2015,
Volume and Issue:
15(1)
Published: June 16, 2015
Sexual
ornamentation
may
be
related
to
the
degree
of
paternal
care
and
'good-parent'
model
predicts
that
male
secondary
characters
honestly
advertise
investment.
In
most
birds,
males
are
involved
in
bringing
up
young
successful
reproduction
highly
depends
on
contribution
during
breeding.
passerines,
song
is
indicative
attributes
for
few
species
it
has
been
shown
features
also
signal
investment
females.
Males
nightingales
Luscinia
megarhynchos
famous
their
elaborate
singing
but
so
far
there
only
little
knowledge
role
intersexual
communication,
unknown
whether
parenting
abilities.
Using
RFID
technology
record
feeding
visits
nest,
we
found
nightingale
substantially
contribute
chick
feeding.
Also,
analyzed
nocturnal
with
focus
have
quality
before.
We
several
features,
namely
measures
complexity
sequencing,
were
correlated
rates.
Moreover,
combination
these
had
strong
predictive
power
nestling
Since
rearing,
might
a
crucial
variable
female
mate
choice
this
species.
Females
assess
future
basis
identified
our
study
thus
evolved
direct
benefits
Additionally
underline
importance
multiple
acoustic
cues
mating
decisions
especially
complex
such
as
nightingale.
