Povolzhskiy Journal of Ecology,
Journal Year:
2021,
Volume and Issue:
2, P. 191 - 229
Published: Aug. 9, 2021
Birdsong
is
one
of
the
most
complex
signals
in
animal
world,
as
it
may
consist
many
different
sounds
grouped
according
to
certain
rules.
Singing
acts
a
distant
signal,
indicating,
e.g.,
species
and
gender
identity
singer.
However,
territorial
songbirds
also
use
singing
an
interactive
social
signal
during
disputes,
well
while
interacting
with
female.
In
these
contexts,
males
vary
type
timing
their
songs
convey
graded
information
about
motivational
state,
those
variations
can
play
role
communication.
this
review,
we
considered
how
male
context.
To
study
such
variations,
researchers
usually
simulated
intrusion
by
broadcasting
conspecific
territories,
including
modified
manner
necessary
for
researcher.
For
comparison,
briefly
intersexual
The
author
paper
focuses
on
complexity
Therefore,
not
all
known
context-dependent
changes
are
considered,
but
only
related
“complexity”:
diversity
song/sound
types
transitional
patterns
course
singing.
Our
review
has
shown
that
change
when
they
detect
environmental
appearance
female
or
competitor
follows:
1)
song
rate
increases,
2)
syllable
3)
song-type
switching
4)
increases
(i.e.,
observed
repertoire
size),
5)
longer
more
predominantly
used.
some
species,
bout
organization
change,
data
still
scarce.
Typically,
more,
aforementioned
acoustic
behaviors
have
been
found
given
song-bird
species.
All
(tactics)
come
down
single
strategy,
namely:
maximizing
over
short
period
time
(e.g.,
several
minutes),
is,
increasing
number
and/or
note
types.
proximate
causes
increased
work
competition
context
might
lie
sensory,
perceptual
bias
receiver.
Namely,
habituation
should
occur
repeated
presentation
same
faster
than
vocalizing
diversely,
effectively
influence
recipient’s
behavior.
Entomologia Experimentalis et Applicata,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 14, 2024
Abstract
Recent,
rapid
arthropod
declines
have
been
tied
to
human
activity.
Yet,
the
propensity
for
human‐produced
noise
disturb
substrate‐borne
(vibratory)
channel
remains
virtually
untested
despite
arthropods'
ubiquitous
use
of
vibratory
information.
Characterizing
landscape
at
biologically
relevant
scales
is
an
essential
initial
step.
We
aimed
measure
across
space
and
time
assess
its
potential
overlap
with
urban–rural
range
season
a
funnel‐weaving
spider,
Agelenopsis
pennsylvanica
(C.L.
Koch)
(Araneae:
Agelenidae),
common
urban
arthropod.
assessed
24‐h
ambient
vibrations
(hereafter
“noise”)
23
sites
Lincoln,
Nebraska
(NE,
USA),
during
adult
A.
(August–October).
Vibratory
(amplitude,
Leq)
varied
by
~15
dB
overlapping
frequencies
within
's
sensitivity
(20–1000
Hz).
Urban
was
positively
correlated
principal
component
containing
estimates
traffic‐induced
(e.g.,
traffic
volume,
road
proximity,
impervious
cover),
whereas
rural
levels
probable
harvest
times.
Our
findings
indicate
spatial
variation
in
areas
seasonal
variability
areas.
also
tested
how
—collected
from
four
distinct
survey
sites—use
their
microhabitat.
daily
spider
position
dry
silk
mass
microcosm
that
played
loud
quiet
(white
differing
dB)
separate
but
connected
chambers.
Age
affected
chamber
choice
“microhabitat
use”)
spiders
collected
loudest
site,
as
younger
adults
associated
used
more
chamber,
this
effect
decreased
age.
As
our
data
demonstrate
varies
microhabitat
high
impacting
behavior,
we
hypothesize
environmental
likely
impacts
other
arthropods
well.
Frontiers in Ecology and Evolution,
Journal Year:
2023,
Volume and Issue:
11
Published: April 27, 2023
Human-altered
landscapes
may
act
as
an
environmental
filter
benefiting
species
or
individuals
with
specific
sets
of
capacities
behaviors.
Yet
the
effects
human
activity
on
culturally
transmitted
traits
in
animals
are
still
poorly
understood.
Combining
song
recordings
and
simulated
territory
intrusions,
we
investigated
whether
songs
(a
cultural
trait)
aggressiveness
personality
small
ground
finches
(
Geospiza
fuliginosa
)
differed
along
a
gradient
levels
(high-low-high)
spanning
two
habitats
contrasting
rainfall
(arid
lowlands,
humid
highlands).
We
found
that
more
common
syllable
types
were
prevalent
arid
lowland
sites
at
high
activity.
The
number
syllables
per
song,
duration,
tempo
rhythmicity
did
not
differ
across
During
territorial
living
areas
higher
lowlands
(regardless
activity)
showed
strongest
aggressive
response
compared
to
those
lower
highlands.
Thus,
prevalence
aggression
commonness
correlated
each
other
sites.
Our
results
support
idea
resource
distribution
human-impacted
environments
select
jointly
for
behavioral
phenotypes
such
well
traits.
Frontiers in Ecology and Evolution,
Journal Year:
2023,
Volume and Issue:
11
Published: Aug. 1, 2023
Animals
vocalize
in
particular
ways
noise,
presumably
to
increase
the
probability
of
detection;
however,
this
idea
has
been
seldom
put
test.
Vermilion
flycatchers
produce
longer
songs
noisy
territories.
To
test
hypothesis
that
detection
we
ran
a
field
playback
experiment
on
30
free-living
males.
Each
male
was
exposed
two
treatments
with
same
songs,
but
one
treatment
had
traffic
noise
and
other
no
noise.
Half
males
were
short
(with
four
introductory
elements
–
IE)
half
long
(eight
IE).
If
have
higher
expected
experimental
would
little
effect
when
heard
larger
they
(i.e.
significant
interaction
between
song
length
treatment).
We
measured
call
flight
responses,
latencies
fly,
closest
approach
speaker.
also
ambient
males’
territories
evaluate
possible
association
their
responses.
Males
did
not
respond
differently
vs
songs;
more
importantly,
predicted
found.
Our
results,
do
support
are
detected
Interestingly,
increased
response
as
showed
non-significant
trend
toward
than
without
results
strongly
suggests
amplifies
territorial
response,
which
may
affect
outcome
competition.
Animal Behaviour,
Journal Year:
2021,
Volume and Issue:
176, P. 67 - 76
Published: April 23, 2021
Observing
interactions
between
others
can
provide
important
information
to
individuals.
Male
songbirds
often
engage
in
singing
contests
where
they
vary
the
type
and
timing
of
signals
eavesdropping
individuals
with
about
their
competitiveness.
How
this
is
used
its
effect
on
subsequent
spatial
behaviour
reproductive
decisions
eavesdroppers
not
well
understood.
Here
we
tested
whether
great
tits
use
gathered
by
male
assess
rivals
(potential)
mates.
We
interactive
playback
experiments
territorial
males
song
either
a
more
(song
overlapping
persistent
singing)
or
less
challenging
alternating
intruder.
followed
female
movements
automated
radiotracking,
determined
paternity
using
microsatellite
analysis
maternal
investment
quantifying
egg
weights
provisioning
behaviour.
expected
that
mates
exposed
treatment
would
subsequently
foray
off
territory
other
potential
extrapair
invest
broods.
Moreover,
neighbours
adjust
foraying
according
gained
eavesdropping.
Females,
however,
did
alter
brood
neither
nor
changed
visiting
territories.
Our
results
no
evidence
females
asymmetric
affected
across
territories
neighbourhood.
Overlapping
for
longer
time
an
intruded
upon
may
always
be
perceived
as
higher
level
threat,
assessment
familiar
are
likely
based
multiple
sources
rather
than
single
interaction.
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