What does it take to ensure the survival of a genetically valuable bird? Sometimes it means flying halfway across the country to pick up an egg and bring it back to Dallas to be fostered by a different set of parents.
That was the case this spring bird season when a lappet-faced vulture egg was laid by a mom at Disney’s Animal Kingdom in Florida. The mom, unfortunately, didn’t have the best track record caring for her young. Luckily, the Dallas Zoo has a great set of lappet-faced vulture parents that could act as foster parents—yes, there are foster parents even in the animal kingdom!
Fostering like this and even hand-rearing are options that Association of Zoos & Aquariums institutions have to consider for new births or hatchings to conserve and save wildlife.
The lappet-faced vulture hatching is just one example of the decisions the Dallas Zoo deals with every spring with 700-plus birds on grounds, spanning more than 100 different species—many of which are endangered, declining, or near threatened.
When the parents aren’t available, sometimes zookeepers step in as the foster parents, like with a new kori bustard hatchling this spring. We’re hand-rearing one of these, and another two kori bustard eggs were picked up by the San Antonio Zoo, where they have the space and manpower to raise these chicks.
In other instances, zoos even cross-foster between similar species if the same species is not an option. For example, a lappet-faced vulture chick may be reared by a white-backed vulture and vice versa. This is done very carefully, and only in the right circumstances.
Regardless of what it takes to ensure a chick’s survival, the Dallas Zoo and other AZA-accredited zoos are doing everything it takes—from hand-rearing to fostering internally or even delivering eggs and chicks to zoos hundreds of miles away—to save animals from extinction.
The next time you peer out into the flamingo pond and see a unique species of bird, remember—it might have been raised by mom and dad, or it may have taken a different path, like being raised by humans, foster parents, or even a different species altogether.