Close Males Sing With Dissimilar Minimum Frequency and Repertoire Size in a Wild Passerine
Ecology and Evolution,
Journal Year:
2025,
Volume and Issue:
15(4)
Published: April 1, 2025
ABSTRACT
The
position
occupied
in
social
networks
influences
the
success
of
individuals
many
animal
species.
However,
associations
between
bird
song
(an
important
means
communication)
and
relative
remained
understudied.
Such
are
expected
because
neighbors
can
learn
elements
from
each
other
or
change
their
songs
due
to
competition,
also
be
related
individual
traits
determining
network
positions.
We
investigated
these
phenomena
males
collared
flycatcher
(
Ficedula
albicollis
),
a
passerine
with
complex
intense
territorial
interactions.
Relying
on
19
years
recordings,
we
used
multiple
reflecting
spectral
temporal
characteristics
complexity
songs,
as
well
syllable
composition,
investigate
if
similarity
is
associated
neighbor
networks.
examined
whether
birds
settle
down
an
age‐dependent
manner
(as
age
linked
quality)
nonrandom
spatial
distribution
affected
by
proportion
immigrants,
young
birds,
number
displaying
males.
found
that
minimum
frequency
repertoire
size
differed,
but
this
pattern
was
not
shaped
predictors.
Therefore,
our
results
highlight
need
study
communication
environment
together.
fact
neighboring
tend
sing
differently
respect
some
suggests
flexibly
adjusted
based
performance
conspecifics.
Language: Английский
Conspecific density and habitat quality drive the defence and vocal behaviour of a territorial passerine
Ibis,
Journal Year:
2023,
Volume and Issue:
166(3), P. 826 - 843
Published: Dec. 15, 2023
Territorial
defence
depends
on
highly
interrelated
factors
such
as
food
abundance
and
conspecific
density.
We
used
Dupont's
Lark
Chersophilus
duponti
a
model
species
to
evaluate
the
response
of
territorial
bird
foreign
male
playback,
examining
how
density,
habitat
quality
body
condition
impact
responses.
The
study
was
conducted
in
central
Spain
with
variable
Response
(yes/no),
latency
time,
distance
playback
speaker,
number
songs
other
vocalizations
were
monitored
for
5
min.
Habitat
estimated
using
BlueNDVI
vegetation
index
extracted
from
high‐resolution
drone
imagery,
which
is
proxy
arthropod
prey
biomass.
Conspecific
density
(Kernel
Density
Estimator)
calculated
assess
their
effect
intensity.
applied
generalized
linear
mixed
models
(GLMMs)
determine
predicted
its
There
greater
probability
areas
higher
conspecifics
poorer
(i.e.
lower
values).
In
contrast,
time
longer
Intrasexual
communication
(singing
calling
rates)
increased
quality.
Intraspecific
(other
vocalizations)
habitats
at
conspecifics.
Body
not
related
any
variables.
Our
results
suggest
that
sometimes
an
indicator
area
being
well
conserved
species,
may
reflect
occupied
by
unpaired
floater
males,
whereas
paired
males
would
occupy
defend
areas,
leading
Language: Английский