Condors return to Sequoia National Park
A sighting of the massive birds shows the success of conservation efforts.
For the first time in nearly 50 years, California condors have been spotted at Sequoia National Park, wildlife officials announced.
At least six condors were spotted in the park in late May, including two near Moro Rock, a popular hiking destination. Four others were seen in the Giant Forest, the National Park Service and the U.S. Fish and Wildlife Service said Tuesday in a joint news release.
The majestic scavengers, the largest land bird in North America , with a 9.5foot wingspan, once inhabited areas stretching from California to Florida and Western Canada to Northern Mexico.
They were listed as endangered in 1967 by the federal government, according to the U.S. Fish and Wildlife Service.
Condors historically occupied the Sierra Nevada mountains and were known to nest in the cavities of giant sequoia trees. But by 1982, the flock’s population had dropped dramatically — largely because of lead poisoning — leaving less than 25 surviving condors, officials said.
The handful of remaining birds were placed in a captive breeding program at the Los Angeles Zoo and San Diego Wild Animal Park to prevent them from going extinct, wildlife officials said.
Condors were released back into the wild in 1992 in the mountains of the Los Padres National Forest. This flock grew to 100 through the continued release of captivebred birds and wild reproduction, biologists said.
Since being released nearly 30 years ago, California condors have been seen flying near Sequoia in the last seven to eight years, but May was the first time they actually landed in the park, according to Tyler Coleman, a wildlife biologist with Sequoia and Kings Canyon National Parks.
“It took decades for the population to recover to the point where they were being seen in locations far beyond their release site,” Coleman said Wednesday. “This is evidence of continued recovery of the species. The animal was on the brink of extinction, and arrival in Sequoia is good evidence that they are utilizing and occupying habitat where they once lived. It is an important milestone.”
Wildlife biologists used GPS to locate the condors in the towering trees and craggy cliffs of the parks.
“We use GPS transmitters to track the birds’ movement, which can be over hundreds of miles on a single day,” said Dave Meyer, a California condor biologist with the Santa Barbara Zoo.
GPS data allows biologists to identify important habitats, locate condor nesting and feeding activities, find sick and injured birds and locate condors that have died in the wild.
Researchers say lead poisoning is responsible for half of all condor deaths in which a cause is identifiable. The birds scavenge for their food, feeding on the bodies of dead animals, which often contain fragments of lead ammunition.
“Lead-core bullets shed weight in small fragments as they hit game, and have the potential to poison wildlife, including condors, who scavenge the remains,” said Chad Thomas, an outreach coordinator for the Institute for Wildlife Studies.