Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Oct. 24, 2023
Abstract
The
link
between
male
song
and
reproductive
success
has
been
explored
at
length
in
socially
monogamous
birds.
However,
results
were
inconsistent
under-represented
non-monogamous
species
with
uniparental
care.
Here,
using
as
a
model
the
aquatic
warbler
Acrocephalus
paludicola,
songbird
no
sexual
dimorphism,
female-only
care,
promiscuity
elaborate
song,
we
whether
repertoire
size,
duty
cycle
rate
of
A-songs,
used
male-male
aggressive
interactions,
are
associated
fitness-
quality-related
traits.
Using
information-theoretic
approach,
found
that
number
9-day-old
nestlings
fathered
increased
A-song
rate,
but
was
not
explained
by
size
cycle.
None
variables
clearly
return
or
change
tarsus
(proxy
for
structural
body
size)
scaled
mass
index
energy
reserves)
chicks
days
2
9
post-hatch.
Inbreeding
coefficient,
index,
wing-length
trypanosome
infection
status
males
unassociated
characteristics.
while
plasmodia
unrelated
to
it
positively
correlated
rate.
We
conclude
warblers
agonistic
could
be
shaped
selection
signal
tolerance
avian
malaria
females.
Ornithology,
Journal Year:
2019,
Volume and Issue:
136(1)
Published: Jan. 1, 2019
Abstract
Researchers
studying
the
evolution
of
animal
communication
often
ask
what
generates
and
maintains
signal
complexity,
but
they
define
measure
complexity
in
different
ways.
If
metrics
are
not
concordant,
then
studies
using
them
probably
comparable.
In
this
study,
we
asked
whether
7
bird
song
vary
tandem
among
individuals
a
single
species,
Rock
Wren
(Salpinctes
obsoletus).
The
included
were
chosen
because
regularly
used
by
researchers
field
to
test
hypotheses
within
literature.
Results
indicated
that
none
positively
correlated
with
any
others,
suggesting
songs
under
general
selective
pressures
favoring
increased
across
multiple
features.
correlated,
care
should
be
taken
when
designing
analyses
comparing
results.
always
clearly
“complexity”
investigation
verify
it
has
significance
study
species.
Contradictory
outcomes
existing
research
into
may
result
from
fact
word
is
represent
independent
traits.
Royal Society Open Science,
Journal Year:
2019,
Volume and Issue:
6(8), P. 190719 - 190719
Published: Aug. 1, 2019
The
effects
of
population
decline
on
culturally
transmitted
behaviours
in
animals
have
rarely
been
described,
but
may
major
implications
to
viability.
Learned
vocal
signals
birds
are
critical
importance
associated
with
reproduction,
intrasexual
interactions
and
group
cohesion,
the
complexity
such
as
song
can
serve
an
honest
signal
individual's
quality
well
viability
a
population.
In
this
study,
we
examined
how
rapid
declines
recently
experienced
by
Hawaiian
honeycreepers
island
Kaua‘i
(USA)
influenced
diversity,
similarity
learned
honeycreeper
songs.
We
analysed
acoustic
characteristics
songs
recorded
during
three
time
periods
over
40-year
frame
for
species
declining
honeycreepers.
detected
loss
diversity
period
that
paralleled
dramatic
declines.
Concurrent
complexity,
also
found
honeycreepers'
became
more
similar
one
another.
To
our
knowledge,
is
first
documentation
convergence
among
rapidly
species.
reduction
not
only
these
endemic
honeycreepers,
potential
challenges
recovery
Moreover,
present
study
highlights
there
‘hidden’
cost
populations
beyond
just
individuals
often
considered,
social
behaviours.
Biology of Sex Differences,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Aug. 1, 2023
Behavioral
sex
differences
are
widespread
in
the
animal
world.
These
can
be
qualitative
(i.e.,
behavior
present
one
but
not
other,
a
true
dimorphism)
or
quantitative
(behavior
is
at
higher
rate
quality
compared
to
other).
Singing
oscine
songbirds
associated
with
both
types
of
differences.
In
canaries,
female
rarely
sing
spontaneously
they
induced
do
so
by
treatments
steroids.
Song
these
females
is,
however,
fully
masculinized
and
exhibits
relatively
subtle
as
male
song.
We
analyzed
here
syllable
content
use
between
singing
canaries.
Songs
were
recorded
from
three
groups
castrated
photoregressed
canaries
that
had
received
Silastic™
implants
filled
testosterone
(T),
T
plus
estradiol
(E2),
left
empty
(control).
After
6
weeks
hormone
treatment,
30
songs
each
47
subjects.
segmented
was
annotated.
Various
metrics
diversity
extracted
network
analysis
employed
characterize
sequences.
Male
characterized
marked
related
use.
Compared
females,
males
larger
syllable-type
repertoire
their
contained
more
types.
Network
sequences
showed
follow
fixed
patterns
transitions
than
females.
Both
sexes,
produced
song
same
duration
containing
number
syllables
similar
rates
(numbers
per
second).
Under
influence
T,
sexes
able
produce
generally
vocalizations
nevertheless
differ
specific
ways.
The
development
during
ontogeny
appears
very
sophisticated
process
presumably
based
on
genetic
endocrine
mechanisms
also
learning
processes.
data
highlight
importance
detailed
behavioral
analyses
identify
many
dimensions
Journal of Field Ornithology,
Journal Year:
2020,
Volume and Issue:
91(4), P. 375 - 392
Published: Nov. 11, 2020
Among
songbirds
with
large
song-type
repertoires,
there
may
be
functional
variation
in
how
individuals
organize
and
display
diversity
over
time.
Past
studies
focusing
on
conventional
measures
of
song
production
have
been
extremely
productive.
However,
network
analysis
offers
a
novel
set
tools
to
quantify
additional,
previously
unstudied
elements
organization
display.
We
studied
protracted
bouts
singing
by
10
male
House
Wrens
(Troglodytes
aedon)
(1)
test
hypotheses
this
species,
(2)
evaluate
the
utility
metrics
such
research.
Our
included
variety
several
standard
from
theory
variably
many
types
male’s
repertoire
could
connected
one
another
limitations
or
their
sequences.
Analysis
variables
showed
that
males
produced
more
longer
songs,
at
shorter
intervals,
containing
syllables
different
syllable
types,
also
prior
than
after
pairing
early
morning
regardless
breeding
stage.
These
results
are
consistent
hypothesis
functions
mate
attraction
possibly
territory
signaling.
In
contrast,
analyses
revealed
sequencing
males,
but
comparatively
few
weak
effects
associated
either
stage
time
day.
Overall,
most
only
others
relatively
small
proportion
all
possible
transitions
actually
occurred.
Hence,
much
was
repertoires
not
realized.
The
latter
outcomes,
brought
light
via
analyses,
highlight
an
important
paradox
for
future
research
related
species
repertoires.
Análisis
de
redes
y
convencionales
la
organización
complejidad
del
canto
en
Troglodytes
aedon
parkmanii
En
aves
cantoras
con
un
alto
número
repertorios,
puede
existir
variación
funcional
como
los
individuos
organizan
el
presentan
diversidad
tipos
través
tiempo.
pasado
estudios
enfocados
medidas
producción
han
sido
extremadamente
productivos.
Sin
embargo,
análisis
provee
una
serie
herramientas
novedosas
para
cuantificar
elementos
presentación
cantos
adicionales
que
no
se
estudiado
pasado.
Estudiamos
prolongados
machos
Torglodytes
fin
comprobar
hipótesis
funcionales
esta
especie
evaluar
utilidad
métricas
teoría
este
tipo
investigaciones.
Nuestro
incluyo
varias
estándar
cuantificar,
tan
variable
muchos
repertorios
pueden
ser
conectados
entre
ellos
las
limitaciones
o
secuencias
sus
cantos.
El
mostró
producen
más
largos,
intervalos
tiempo
mas
cortos,
contienen
mayor
cantidad
sílabas
diferentes
también
antes
apareamiento
temprano
mañana
independientemente
estado
reproductivo.
Estos
resultados
son
consistentes
es
utilizado
atracción
pareja
posiblemente
enviando
señales
territorialidad.
contraste,
utilizando
revelaron
secuencia
por
parte
machos,
pero
comparativamente
pocos
efectos
débiles
asociados
etapa
reproductiva
hora
día.
general,
mayoría
estuvieron
ocurrió
proporción
relativamente
pequeña
transiciones
todos
posibles.
Por
lo
tanto,
mucha
variabilidad
posible,
dado
amplio
repertorio
fue
realizada.
resultados,
obtenidos
redes,
resaltan
paradoja
importante
investigaciones
futuras
otras
especies
emparentadas
extensos.
Behavioral Ecology,
Journal Year:
2020,
Volume and Issue:
31(5), P. 1150 - 1158
Published: June 16, 2020
Abstract
Across
populations,
animals
that
inhabit
areas
with
high
anthropogenic
noise
produce
vocalizations
differ
from
those
inhabiting
less
noisy
environments.
Such
patterns
may
be
due
to
individuals
rapidly
adjusting
their
songs
in
response
changing
noise,
but
individual
variation
is
seldom
explored.
Therefore,
we
tested
the
hypothesis
male
house
wrens
(Troglodytes
aedon)
immediately
adjust
according
and
social
context
further
modifies
responses.
We
recorded
songs,
quantified
defined
within
pairs
as
female
fertile
status
between
males
number
of
conspecific
neighbors.
used
a
reaction-norm
approach
compare
song
trait
intercepts
(between-male
effects)
slopes
(within-male
function
noise.
Individuals
adjusted
duration
How
they
achieved
adjustments
varied:
some
sang
shorter
others
longer
greater
varied
extent
which
duration.
Variation
could
affected
by
competition
between-male
levels
interacted
neighbors
affect
syllable
Neither
within-
nor
effects
were
detected
for
frequency
traits.
Rather,
mates
lower-frequency
increased
peak
more
Among
males,
not
frequency,
whereas
temporal
structure
depending
on
factors.
Not
all
signals
same
way
selection
favor
different
Journal of Avian Biology,
Journal Year:
2021,
Volume and Issue:
52(10)
Published: Sept. 14, 2021
Anthropogenic
noise
constrains
the
transmission
of
birdsong
and
alters
behavior
receivers.
Many
birds
adjust
their
acoustic
signals
to
minimize
interference
anthropogenic
on
signal
transmission.
Birds
may
also
change
exchange
information
during
aggressive
interactions.
However,
it
is
unclear
how
deal
with
a
potential
trade‐off
between
adjusting
better
transmit
in
noisy
environments
versus
mediating
Additionally,
we
do
not
know
urbanization
territorial
We
investigated
interplay
among
song,
aggression,
urbanization,
noise,
males
southern
house
wren
Troglodytes
aedon
musculus
,
using
recordings
spontaneous
songs
(non‐aggressive
context)
playback
experiment
simulating
male
intrusion
(aggressive
context).
found
that
urban
wrens
behaved
more
aggressively
response
intruder
by
singing
spent
time
closer
than
rural
regardless
noise.
Males
produced
lower
minimum
frequency
trills
wider
bandwidth
higher
vocal
performance
under
acute
(playback)
relaxed
(post‐playback)
encounters.
These
results
suggest
use
communicate
intent
or
fighting
ability.
Urban
higher‐pitched
irrespective
context.
noisiest
territories
highest‐pitched
but
only
non‐aggressive
Rural
tended
produce
longest
shortest
Results
affects
behaviors
wrens.
this
species
seem
primarily
rather
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 26, 2024
Abstract
The
link
between
male
song
and
reproductive
success
has
been
explored
at
length
in
socially
monogamous
birds,
but
results
were
inconsistent
under-represented
non-monogamous
species
with
uniparental
care.
Here,
we
evaluated
whether
metrics
of
the
aquatic
warbler
Acrocephalus
paludicola,
a
promiscuous
songbird
female-only
care
large
repertoires,
are
associated
fitness-
quality-related
traits.
We
showed
that
number
9-day-old
nestlings
fathered
probability
avian
malaria
infection
increased
rate
agonistic
song,
produced
male-male
interactions,
scaled
mass
index
(proxy
for
energy
reserves)
positively
correlated
repertoire
size.
breeding
was
not
explained
by
size
duty
cycle.
None
variables
clearly
return
or
change
tarsus
structural
body
size)
chicks
days
2
9
post-hatch.
No
other
relationships
characteristics
inbreeding
coefficient,
index,
wing-length
Trypanosoma
status
males
supported,
Plasmodium
unrelated
to
cycle
conclude
warblers
could
be
signal
early
developmental
stress
current
condition,
shaped
sexual
selection
females
genetic
makeup
enhances
survival
upon
Plasmodium.
