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Condors' future on a cliff's edge

 
11:03 08 April 02
 
NewScientist.com news service
 

Biologists watching five nesting pairs are hoping that California Condors have reached a critical point in their recovery. There are only 182 of North America's largest and rarest bird left on the planet and the last wild-hatched chick was in 1984.

Two of the pairs, located northwest of Los Angeles in the Sespe Condor Sanctuary are known to have eggs. At the other three nests, one at Sespe and two in the Grand Canyon, the pairs do appear to be trading egg incubation shifts. In the Grand Canyon, the birds are nesting in cliff face caves that are inaccessible to even the most intrepid climbers, making verification of eggs nearly impossible.

Condors in courtship on the canyon rim   Photo: Earle A Robinson
Condors in courtship on the canyon rim Photo: Earle A Robinson

 


"All we can do right now is faithfully watch and wait," says Chad Olson, National Park Service Raptor Biologist. "And as the condors continue to trade nest guarding and incubation shifts, we'll become anxious to see them succeed."

But biologists may have a while to wait. California Condors normally lay a single egg between late January and early April and incubate for approximately 56 days. With the California nesting birds this means there would probably not be a chick until late April and in the Grand Canyon the hatchlings might not appear until late May. Pairs also nested in 2001 but no chicks were born.


$40 million

"Getting to this stage has been a lot of hard work, but through the efforts put forth by a lot of dedicated people and the support of both public and private groups we have made it a long way" says Bruce Palmer, US Fish and Wildlife Service California Condor Recovery Coordinator. "To date, we have spent 35 to 40 million dollars on the Condor, and that was a shoestring budget."

"The reality is that the cost of saving a species is proportional to how endangered you let the species get," adds Jeff Humphrey, spokesman for Fish and Wildlife, "In the case of this species there were only 22 in 1984, and that's a really small number to work with."

"To feel secure in removing the condor from the list of endangered species, we need to establish one captive and two wild populations - each reproductively self-sustaining and containing at least 150 individuals," adds Palmer.

"Today, with 182 condors on Earth, we have the kernel of that numeric goal. If this year or next we have successful reproduction in the wild, we'll be making hard-fought conservation history," he says.

 

Matt Kaplan


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