Condor Genealogy

THE WILD POPULATION of California condors, the largest and longest-living land bird in North America, reached a devastating low of 22 individuals in 1982. All of these birds were captured and placed in human captivity by 1987. But on a clear, balmy afternoon in February 2026 I walked across the pedestrian side of Navajo Bridge over Marble Canyon and saw not one, not two, but eight free-flying California condors.

 The gargantuan birds soared between rocky ledges on the canyon walls and the lattice of steel beams supporting the adjacent road bridge, where they perched, hopped and waddled, the turquoise waters of the Colorado River rushing far below. Gray-headed sub-adult condors awkwardly flapped nine feet of wings and begged for food from the stoic pink-headed adults. One bold, somewhat reckless juvenile landed on the railing of the pedestrian bridge, just yards away from the crowd of onlookers. An even more reckless human approached within a few feet of the condor’s flesh-tearing hooked bill and filmed with his phone in hand.

How did condors go from near-extinction to gathering in numbers here at the base of Vermilion Cliffs? And why does such a nomadic bird, with millions of acres of wilderness to roam, choose to hang out on a man-made bridge in plain view of human crowds, only a few miles from where they were first released in Arizona?

Chronic lead poisoning from ingesting bullet fragments in carcasses propelled the condor into a catastrophic decline through the 20th century. Captive-breeding programs brought the population to 52 individuals by 1992, and reintroduction efforts succeeded in producing new wild-born condors by the early 2000s. The US Fish and Wildlife Service reports that as of 2025 there are 392 condors in the wild and 215 in captivity. By the numbers this is a remarkable recovery. But this situation is entirely dependent on continuous, costly human intervention.

Sophie AH Osburn, a former field manager for the California Condor Reintroduction Program in Arizona, describes in her memoir Feather Trails: A Journey of Discovery Among Endangered Birds the round-the-clock labor of an entire team of scientists and field assistants required to sustain our state’s reintroduced condor population. Osburn and her team provided safe carcasses to condors at feeding stations, tracked their every movement via radio transmitters, regularly monitored their blood lead levels, and delivered many rounds of chelation therapy to reverse lead toxicity.

Osburn worked with condors at a crucial juncture for the species in the early 2000s, when adults released from captivity were making their first documented attempts to breed in the wild. By searching each condor’s wing-tag number on the Peregrine Fund’s webpage Status of Individual California Condors, I found a serendipitous connection between a condor on Navajo Bridge in February 2026 and one that Obsurn stewarded at the Vermillion Cliffs more than 20 years ago.

One of the young condors I saw at Navajo Bridge, 1235, hatched in the wild nearly four years ago. Her father, 123, hatched at the Los Angeles Zoo in 1995 and was released into the wild at Vermillion Cliffs in 1997. As I learned in Osburn’s book, 123 was also the father of the first condor to fledge in the wild in Arizona after reintroduction, 305. Osburn reports that in just one day in the summer of 2003, 123 flew over 150 miles, feeding on a cow carcass at the South Rim, feeding his chick 305 at the nest site on Salt Creek, and returning to the Vermillion Cliffs to roost at night.

1235 has already outlived her eldest brother, 305, who tragically perished at the age of two. 305’s mother, 127, fledged two more chicks before she too died of lead poisoning at age 14 in 2009.

Condors like 123 are beacons of hope for a future in which the species will enjoy its natural lifespan of over 60 years in the wild. But without a national ban on lead shot, it will be touch-and-go for this charismatic species for the foreseeable future. Unlike bald eagles and other raptors whose populations rebounded dramatically and restabilized after the 1972 banning of the toxic pesticide DDT, condors still rely on the intensive human intervention Osburn describes to survive in the wild, since the lead threat remains at large.

It was awe-inspiring and unsettling, oohing and aahing with the crowd at these prehistoric birds’ cheeky, flashy antics. A bridge is the greatest perching structure around, after all, and there is no greater source of chaos and carcasses than a pack of carnivorous mammals. Perhaps the condors know that their fate depends on our choices, and that nothing woos us like a photo op. In this sense free-flying condors are still living in human captivity.

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