Moving Day for Condor Su’nan

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Su'nan has left the nest.

Su’nan has left the nest.

A lot has happened this month at the San Diego Zoo Safari Park’s condor breeding facility. This is the time of the year when we are preparing for the next breeding season: cleaning nests, conducting routine health exams, and providing maintenance to flight pens that were previously off-limits to keepers because of the presence of our young chicks slated for release to the wild. Also, this year we are pleased to report that we are setting up three new breeding pairs here at the Safari Park. But the most exciting piece of news is that our youngest chick and star of this year’s Condor Cam, Su’nan, has finally fledged!

Su’nan left the nest and was able to fly up to the high perches in her pen on October 17 at the age of 172 days. The youngest condor to fledge at the Park was 123 days old, which makes Su’nan a bit of a late bloomer, but that is OK. Her feathers are in beautiful shape, and she has put on a decent amount of weight, measuring in at a petite 16 pounds (7.3 kilograms). When she flew up to the perch, after sunning herself on a low stump, proud papa Towich perched calmly next to her as she preened. It was a view well worth the wait!

Here's a sneak preview of the remote socialization pen where Su'nan now lives.

Here’s a sneak preview of the remote socialization pen where Su’nan now lives.

A few days later, on October 23, it was time to move Su’nan out of her parents’ pen and into our remote socialization pen approximately one mile from the main part of the Safari Park. There, she will be isolated from any human activity and socialized with other fledglings her age. In the wild, condor chicks stay with or around their parents for up to 18 months. We don’t let them stay that long here at the Park. If we did, the next breeding season would probably be compromised; the presence of the fledgling may prevent the parents from breeding the next year, or the parents may turn aggressive to the chick if they try to nest again.

Before her move, we affixed a wing tag to Su’nan’s right wing for identification purposes. She is now wearing wing tag Blue 49. She is sharing this large pen with eight other condors:

Cachuma (ca-CHOO-ma): Female, 31 years old, wearing no wing tags
Xananan (ha-NA-nan): Female, 10 years old, wearing tag Blue 21 (left wing)
Wesa (WAY-sah): Female, 1½ years old, wearing tag Yellow 76 (right wing)
Pshan (puh-SHAWN): Male, 1½ years old, wearing tag Yellow 91 (right wing)
Ostus (OH-stuss): Male, 1½ years old, wearing tag Blue 2 (right wing)
Napay (na-PIE): Male, 7 months old, wearing tag White 24 (right wing)
Qawaq (ka-WAWK): Female, 7 months old, wearing tag Red 26 (right wing)
Issuy (ee-SOO-ee): Female, 6 months old, wearing tag Yellow 43 (right wing)

California condors that are expected to be released to the wild are called release candidates. We raise all of our condor chicks as if they are release candidates until we hear otherwise from the U.S. Fish & Wildlife Service, which oversees the California Condor Recovery Program. We have yet to hear if and/or where any of this year’s fledglings will be released. Release candidates are isolated from humans. We offer their food through a chute in the wall. The pools are drained and rinsed from the outside of the pen. We don’t pick up any of their old food. The only time the birds see us is during a medical procedure: affixing wingtags, pre-shipment examinations, or West Nile Virus inoculations. These generally are not enjoyable experiences for the young condors, and that is what we want them to learn from us before they are shipped to the wild. We don’t want them to associate humans with anything beneficial. We are hoping to foster behaviors that wild condors would have: avoiding human activity and hazardous, artificial situations. Survival rates for condors that become accustomed to humans and human activity are very low.

Two of Su’nan’s new penmates have a very important role. Cachuma and Xananan, the adults, are acting as the young birds’ new mentors. The mentor’s job is to facilitate the socialization of the fledglings. Condors are very social and, like us, need to learn the rules of how to interact in a group. The parent condors started this process when the chicks hatched and continued it as the youngsters eventually fledged. Now that they are no longer living with their parents, Cachuma and Xananan will further the fledglings’ education. They will be the dominant birds in the pen, often displacing the fledglings from perches or roost sites or pushing them from the food until they have eaten first. The dominant birds at a site are usually the biggest ones and often the most experienced. The young condors need to learn how to interact with these dominant and pushy birds to be successful in the wild.

The socialization pen is very large with lots of space to fly around and exercise wings. There are several large oak snags on which to perch or roost. Also, there are two pools from which to drink or bathe. There are several ground-level perches and boulders to hop around on as well. It is interesting to see the social development of each bird. They can choose to perch next to whichever bird they wish, so they really get to know each other well. We have learned that young condors that aren’t well-socialized tend not to be successful once they are released to the wild.

So far, Su’nan is taking a very subordinate role in the group, as expected. As she gets more experience, she will gain confidence and assert herself as a competent member of her group. She flies very well in the pen and interacts appropriately with the older birds. Her parents, Towich and Sulu, have done a great job preparing her for the big, wide world!

This is the first year that the Condor Cam is able to broadcast our socialization pen. We are very excited to provide this unique view to all of our dedicated viewers. We plan on starting this camera on Monday, November 3. Enjoy! Feel free to post any comments or questions, and we’ll try to get them answered as soon as we can!

Ron Webb is a senior keeper at the San Diego Zoo Safari Park. Read his previous post, To Fledge or Not to Fledge.

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