California condors could find themselves once
again in serious trouble just like this was the case in 1980s. In 1987 there
were only 22 condors remaining in the wild, and they were captured and bred in San Diego Zoo Safari Park where
conservationists managed to stop further decline in condor population. Today
there are around 400 California
condors in the wild.
The main
factors that led to serious decline in California condor population were
habitat loss, poaching and lead poisoning. Sadly, by the current looks of it
lead poisoning could once again spell huge danger for condors in the wild.
In the
latest study led by the environmental toxicologists at the University of California
the scientists have expressed fear that California Condors could once again
find themselves in trouble because of the lead poisoning from ammunition.
Condor’s
main diet includes carcasses of large mammals such as deer. While feeding on these
carcasses condors can ingest fragments of lead bullets leading to lead
poisoning and eventual death.
Myra
Finkelstein, a research toxicologist at UC Santa Cruz said that: „California
condors are tagged and monitored, captured twice a year for blood tests, and
when necessary treated for lead poisoning in veterinary hospitals, and they
still die from lead poisoning on a regular basis“.
Not only
have scientists found high lead isotope ratios in blood of free-flying condors,
they have also discovered excessive lead levels in feathers, which led them to
conclusion that birds are in fact chronically lead poisoned.
What this
means is that without the continued releases of captive-reared birds and
interventions to treat lead-poisoning, the condor population would again experience
serious decline in population, and head to extinction.
The current
measures of intensive management are helping condors to maintain their current
numbers but nonetheless something has to be done to solve this worrying lead poisoning
issue.
In 2008, California partially
banned the use of lead ammunition in condor habitat. This ban has so far not
fulfilled its purpose and has not been able to reduce the lead levels in blood
of the condors.
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