California lawmakers have outlawed lead bullets for the killing of wildlife, and new condor cams can give a bird’s-eye view of the majestic creatures. Now, they just have to stay alive long enough until the law takes full effect in 2019.
“It’s scary to see so many clinically sick birds,” Dr. Curtis Eng, chief veterinarian and manager of the zoo’s condor program said.
Lead exposure is considered such a threat to the once-nearly extinct birds that California condors are routinely trapped twice a year and blood-tested in the field. If they come up positive for lead, they are sent to a facility for more testing and treatment. Most birds respond positively to treatments and are back in the wild within three weeks. But those are, by and large, the ones that don’t show symptoms of poisoning.
But this time, the birds are visibly sick and not eating, which End said is unusual. Three of the birds were critically ill when brought in. The 21 poisoned birds are nearly half of what the zoo typically treats in a given year.
The world population (pdf) of California condors has climbed to more than 430 after reaching a low of 22. About half of those are in the wild and around 130 fly free in California. Condors were listed as a federally endangered species in 1967, but it was two decades before measures were taken to save them.
Chief among the threats to the birds are the use of lead bullets by hunters. Conventional wisdom and accepted science blames lead ammunition for poisoning millions of animals that weren’t shot, but who ate animals that were.
Governor Jerry Brown signed Assembly Bill 711 last month, which makes California the first state to require hunters to use non-lead ammunition. It expands a 2007 law that banned the use of lead bullets in the eight counties frequented by condors. That law was widely deemed ineffective.
The National Rifle Association (NRA) took that failure as evidence that lead bullets weren’t a threat to condors. The NRA believes the lead widely found in dead and ailing animals comes from other sources because lead is in everything from paint to pesticides. Lead is a dangerous toxin and has been banned in toys, paint and gasoline.
The NRA launched its Hunt for Truth website and fought the legislation hard, winning a delay in its implementation. The law will be phased in, beginning in 2015.