Natural Differences between the Dawn and Dusk Choruses of a Neotropical Songbird and Their Relationship to Its Response to Urbanization
Published: Jan. 11, 2024
Urbanization
in
one
of
the
more
important
phenomena
affecting
biodiversity
Anthropocene.
Some
organisms
can
cope
with
urban
challenges,
and
changes
birds’
acoustic
communication
have
been
widely
studied.
Although
timing
daily
organization
previously
reported,
there
is
a
significant
gap
regarding
possible
variations
song
structure
between
dawn
dusk
choruses.
Considering
that
urbanization
potentially
imposes
different
soundscapes
for
choruses,
we
postulate
two
hypotheses:
i)
are
“natural”
parameters
ii)
such
within
city
will
vary
response
to
noise.
We
studied
extra-urban
populations
Chiguanco
Thrush
La
Paz,
Bolivia,
measuring
their
choruses:
length,
sound
pressure,
minimum,
maximum,
range
dominant
frequency,
proportion
songs
produced.
The
results
support
our
natural
conditions
were
louder
larger
bandwidths,
city,
frequency
entire
rises
along
increasing
amplitude.
Understanding
structural
choruses
could
allow
better
interpretation
how
some
bird
species
challenges.
Language: Английский
Evolution of female song and duetting in the chaffinch ( Fringilla ) species complex
Journal of Avian Biology,
Journal Year:
2023,
Volume and Issue:
2023(3-4)
Published: Jan. 24, 2023
Female
song
is
ancestral
to
songbirds
and
shows
considerable
phylogenetic
signal,
but
its
presence
also
appears
be
labile
correlated
with
life‐history
ecology.
While
previous
studies
have
examined
the
evolution
of
female
across
species‐rich
families,
here
we
studied
in
island
populations
a
recently
diverged
species‐complex,
chaffinches
(genus
Fringilla
).
We
show
this
behaviour
has
evolved
these
populations,
probably
on
two
independent
occasions.
In
F.
teydea
,
performed
loose
duets
males,
while
coelebs
produced
solo.
Populations
singing
females
showed
year‐round
territoriality
were
found
regions
low
seasonality
–
both
factors
previously
connected
high
rates
singing.
To
determine
relative
saliency
songs
conspecifics,
degree
which
they
instigate
territorial
defence
behaviours,
series
speaker
playback
experiments.
c.
canariensis
could
induce
comparable
responses
male
song,
whilst
duetting
similar
solo
songs,
therefore
may
relate
within‐pair
communication
instead.
Our
results
suggest
can
highly
trait
that
evolve
over
short
evolutionary
timescales.
Language: Английский
A review of the literature on female birdsong function
Animal Behaviour,
Journal Year:
2024,
Volume and Issue:
216, P. 23 - 35
Published: Aug. 18, 2024
Language: Английский
Natural Patterns in the Dawn and Dusk Choruses of a Neotropical Songbird in Relation to an Urban Sound Environment
Animals,
Journal Year:
2024,
Volume and Issue:
14(4), P. 646 - 646
Published: Feb. 17, 2024
Urbanization
is
one
of
the
more
important
phenomena
affecting
biodiversity
in
Anthropocene.
Some
organisms
can
cope
with
urban
challenges,
and
changes
birds’
acoustic
communication
have
been
widely
studied.
Although
timing
daily
organization
previously
reported,
there
a
significant
gap
regarding
possible
variations
song
structure
between
dawn
dusk
choruses.
Considering
that
urbanization
imposes
different
soundscapes
for
choruses,
we
postulate
two
hypotheses:
(i)
are
parameters
(ii)
such
within
city
will
vary
response
to
noise.
We
studied
extra-urban
populations
Chiguanco
Thrush
La
Paz,
Bolivia,
measuring
choruses:
length;
sound
pressure
level;
minimum,
maximum,
range
dominant
frequency;
number
songs
per
individual.
The
results
support
our
were
songs,
louder
had
larger
band
widths
at
than
populations.
Urban
Thrushes
sing
less,
frequency
entire
rises,
amplitude
increases
as
compared
Thrushes.
Understanding
choruses
could
allow
better
interpretation
how
some
bird
species
challenges.
Language: Английский