Abstract
Restoring
ecological
dynamics
is
a
key
objective
of
conservation
translocations.
Exemplarily,
reconnecting
the
reintroduced
alpine
populations
with
native
Pyrenean
through
re‐establishing
locally
extinct
in
between,
Causses
and
Pre‐Alps,
major
goal
for
long‐term
Bearded
Vultures
Europe.
Understanding
Vultures'
post‐release
movements
foraging
behavior
critical
to
understanding
settlement
newly
restored
supporting
measures.
The
telemetric
monitoring
43
translocated
wild‐born
juveniles
allowed
us
investigate
whether
differences
exist
during
first
year
life
between
populations.
Medium‐
long‐distance
exploration
start
spring
following
fledging
both
individuals.
However,
birds
most
distant
release
site
(Causses)
exhibited
greater
distances
no
clear
directional
movement
pattern,
had
smaller
home
ranges,
stronger
preference
supplementary
feeding
stations
than
those
from
other
Although
some
Pre‐Alps
displayed
similar
behaviors,
pattern
not
as
strong
Causses,
likely
because
proximity
breeding
Alps
or
number
management
stations.
Preference
(SFS)
mostly
occurred
populations,
but
was
lower
Causses.
Seasonal
variations
SFS
were
consistent
among
peak
fledging.
Beyond
documenting
Vultures,
we
suggest
better
accounting
demographic
consequences
behaviors
track
translocation
effectiveness,
at
local
regional
scales.
iScience,
Год журнала:
2023,
Номер
26(5), С. 106699 - 106699
Опубликована: Апрель 20, 2023
Conservation
translocations
involving
vultures
rely
either
on
soft-
or
hard-release
strategies.
To
investigate
whether
these
strategies
affect
home
range
stability
and
survival,
we
compared
the
spatial
behavior
mortality
of
38
Griffon
(Gyps
fulvus)
released
in
Sardinia.
Griffons
were
after
no
acclimatization
3
(short)
15
(long
acclimatization)
months
an
aviary.
In
two
years
that
followed
their
release,
griffons
without
did
not
stabilize
size,
while
those
subjected
to
long
stabilized
it
second
year.
Short-acclimatized
always
had
a
large
range,
soon
release.
The
number
individuals
reached
sexual
maturity
was
higher
(71.4%)
long-acclimatized
than
short-acclimatized
ones
(40%)
hard
(28.6%).
Soft
release
with
period
seems
be
most
successful
method
ensure
stable
ranges
survival
griffon
vultures.
Bird Conservation International,
Год журнала:
2023,
Номер
33
Опубликована: Янв. 1, 2023
Summary
Vultures
are
long-lived
species
sensitive
to
human-caused
mortality
that
has
already
determined
a
widespread
collapse
in
Asian
and
African
populations.
They
provide
significant
ecosystem
services
(regulatory
cultural)
consuming
livestock
carcasses
saving
greenhouse
gas
emissions,
favouring
nutrient
recycling,
environmental
sanitation,
providing
financial
revenue.
Appraising
the
incidence
causes
of
could
help
improve
management
conservation
actions.
We
compiled
records
reported
mortalities
for
reintroduced
Griffon
Vulture
Gyps
fulvus
population
central
Apennines
Italy
(123
cases,
July
1994–December
2020).
The
average
was
4.69
vultures
per
year
(±
1.14
SE),
with
no
temporal
trend.
peak
events,
estimated
by
harmonic
regression
analysis,
March,
while
minimum
occurred
October.
No
differences
were
found
among
age
classes
sex
ratio
established
at
1.43:1
(M:F,
N
=
68).
Out
103
(83.7%)
which
underwent
post-mortem
toxicological
screening,
53%
poisoned,
mainly
carbamates,
27%
died
unknown
causes.
Overall,
direct
or
indirect
anthropogenic
caused
67%
deaths.
Even
considering
an
inherent
bias
associated
as
prevalence
death
estimation
rates,
overwhelming
relevance
poisoning
highlights
existing
anti-poisoning
efforts
should
be
refined
incorporated
into
coordinated
multidisciplinary
strategy.
A
standardised
approach,
from
vulture
carcass
discovery
procedures
applied
reduce
uncertainty
determination
death,
increasing
effectiveness
prosecution
wildlife
crimes.
As
most
cases
affecting
likely
represent
side
(though
illegal)
effect
retaliatory
defeat
predators,
effective
strategies
reducing
human–wildlife
conflicts
applied.
Abstract
Restoring
ecological
dynamics
is
a
key
objective
of
conservation
translocations.
Exemplarily,
reconnecting
the
reintroduced
alpine
populations
with
native
Pyrenean
through
re‐establishing
locally
extinct
in
between,
Causses
and
Pre‐Alps,
major
goal
for
long‐term
Bearded
Vultures
Europe.
Understanding
Vultures'
post‐release
movements
foraging
behavior
critical
to
understanding
settlement
newly
restored
supporting
measures.
The
telemetric
monitoring
43
translocated
wild‐born
juveniles
allowed
us
investigate
whether
differences
exist
during
first
year
life
between
populations.
Medium‐
long‐distance
exploration
start
spring
following
fledging
both
individuals.
However,
birds
most
distant
release
site
(Causses)
exhibited
greater
distances
no
clear
directional
movement
pattern,
had
smaller
home
ranges,
stronger
preference
supplementary
feeding
stations
than
those
from
other
Although
some
Pre‐Alps
displayed
similar
behaviors,
pattern
not
as
strong
Causses,
likely
because
proximity
breeding
Alps
or
number
management
stations.
Preference
(SFS)
mostly
occurred
populations,
but
was
lower
Causses.
Seasonal
variations
SFS
were
consistent
among
peak
fledging.
Beyond
documenting
Vultures,
we
suggest
better
accounting
demographic
consequences
behaviors
track
translocation
effectiveness,
at
local
regional
scales.
