Condor Breeding Season 2016


Taken in 1983, this picture shows California condor Sisquoc emerging from his egg—the very first of his kind hatched by San Diego Zoo Global. Today, he can be seen on Condor Cam, helping his mate incubate their egg, preparing to successfully raise another chick.


The 2016 breeding season is well underway at the San Diego Zoo Safari Park’s California Condor Breeding Facility!

So far, five eggs have been laid. The first one was laid December 14, 2015—the earliest egg ever recorded! (Usually, condors start laying eggs midway through January.) This egg was laid by one of our newly-established pairs, male Xas (pronounced “HAWSS”) and female Pismo (pronounced “PIZ-mo”). Pismo is a proven mother, but this is Xas’ first nesting opportunity. The egg successfully hatched under them on February 10, 2016, and the chick, named Sawyin (pronounced “SAW-yeen”) is growing steadily.

Our other four eggs are still incubating in our artificial incubators. The parents are currently sitting on fake eggs that we refer to as “dummy eggs.” We use a dummy egg as a type of placeholder until the real egg is ready to hatch. We need the parents to stay broody, or attentive to the nest, so that they will accept the hatching egg when the time comes. As they get closer to their due dates, we will carefully sneak the real eggs back into the nests so the parents can hatch them. We artificially incubate all of our California condor eggs in order to document embryonic development and to prepare for any eggs that may need help in hatching. It’s not that we don’t trust the condors to incubate their own eggs, it’s just much easier to check on the eggs if we incubate them instead; the parents are very protective of their eggs (as they should be!).

The fifth egg, laid on February 4, 2016, is the egg we are hoping will hatch on Condor Cam. The parents are our Condor Cam veterans Sisquoc (pronounced “SISS”-kwawk”) and Shatash (pronounced “sha-TAWSH”). Sisquoc, the male, is our biggest condor at the Safari Park; during his last exam, he weighed in at a hefty 26.2 pounds. He can be identified by his large size and his wing tags (yellow 28). Shatash, the female, has no wing tags and is much smaller at 17.6 pounds.

Sisquoc was the first California condor ever hatched in a zoo (his egg was laid in the wild and brought to the San Diego Zoo for incubation). He emerged from his shell on March 30, 1983, and news of his hatching triggered an outpouring of mail from all over the world. Congratulatory letters were sent by conservationists, zoos, governments, school classrooms, and many individuals, all wanting to help with the condor project.

Shatash hatched at the Los Angeles Zoo, one of our valuable partners in the California Condor Recovery Program. Her father was the first condor to hatch at the San Diego Zoo Safari Park (again, from a wild-laid egg), back in 1985. Sisquoc and Shatash have been paired together since 1993. This is their 25th egg. Eighteen chicks have hatched, and Sisquoc and Shatash have raised seven of these, including three chicks on Condor Cam: Saticoy, who is flying free in southern California; Cuyamaca, who was released in Arizona; and in 2015, Antiki, who is still awaiting release. The other chicks were raised by keepers using a condor puppet so the young birds wouldn’t imprint on their human caretakers. Sisquoc and Shatash have proven to be great and reliable parents.

California condors tend to be monogamous and share ALL nest duties: incubating the egg, brooding the chick, feeding the chick, and defending the nest. Throughout incubation you will see Sisquoc and Shatash take turns sitting on the egg to keep it warm—condor eggs incubate at about 98 degrees Fahrenheit (36 degrees Celsius). You may see them roll or turn the egg periodically. This gentle egg movement is crucial for the development of the growing embryo. Incubation bouts can be very short (just a few minutes) or birds can sit for two or three days, so don’t be alarmed! Sometimes the parents will sit together in the nest. This species has a long incubation period; we expect the egg to “pip,” or start hatching, after 55 days of incubation.

Sisquoc and Shatash’s new egg is very valuable to the condor population. California condors are critically endangered. In 1982, they were on the road to extinction, with only 22 birds in the world. Today, through breeding programs at the San Diego Zoo Safari Park, the Los Angeles Zoo, the Oregon Zoo, and the World Center for Birds of Prey (in Boise, Idaho), as well as intensive field management in the wild, the population is up to 436 birds. It’s a nice population increase, but there is still a lot of work that needs to be done. This egg, and eventual chick, represents the next step in the California condor story—and you get to witness it on Condor Cam!
Stay tuned for future posts here with egg updates. If you have any questions about what you’re seeing, feel free to ask them in the “Comments” section at the end of this post, and we’ll do our best to provide answers. Happy viewing!

Ron Webb is a senior keeper at the San Diego Zoo Safari Park. Read his previous blog, Moving Day for Antiki.

15 Responses to Condor Breeding Season 2016

  1. So excited we are back on condor cam and I am looking forward to the news of our new condor chicks great work to a great team thank you

  2. I was thrilled to see Shatash brooding on camera this AM. Thank you for the opportunity to see her and Sisquoc raising another chick. One more step away from extinction.

  3. Another exciting season!, can’t wait.

  4. Wonderful to see the nesting pair again. Not that I didn’t like watching the socialization pen. but can the camera page be corrected to say what is currently on the cam? Not Sunan anymore.

    Monitor’s note: Hmm, it is changed when I bring it up on my screen… Try clicking on the hot linked word Condor Cam in the post and see if it works that way.

    • Thank you for your response. It’s taken me awhile to figure out why I see different things on different days. The link in the blog goes to:
      But the condor cam button at the bottom of the panda cam page I’ve used for years (and I like the ability to switch cams with 1 click) goes to! Can all the links be made to go to one most current page?

      Monitor’s note: I’ll ask the Web Team. :)

  5. Happy to see Sisquoc on the nest.
    Great article in the OC Register about condors. For the first time in years more condors were hatched in the wild than died. And 27 wild condor nests!!! I assume their info is correct. You folks are a part of that miracle. Congratulations and God bless you.

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  6. That’s a very lonely looking egg since Sisquoc got up and walked away. When do you think their egg will pip and be brought back to them?

    Monitor’s note: Your question has been forwarded to the Condor Team. It’s their busy time, but I’ll post their reply when they have a moment to send one. :)

  7. 3/16/2016

    I was just wondering how these Parents know how to switch egg sitting duties, is this instinct?

    Thank You, Cynthia