A tiny, critically endangered Rodrigues Flying Fox almost didn't live past her first day at the Oregon Zoo, but the pup is now one-month-old and well on the road to recovery.
"Rods," as Rodrigues Flying Foxes are often called in zoological circles, were once considered the most imperiled bat species on the planet, and each birth is considered an important step toward ensuring their long-term survival.
Oregon Zoo keepers were justifiably thrilled when, Sara, one of several Rodrigues Flying Foxes at the zoo's "bat cave," gave birth to a new pup on March 10. However, the day after the pup’s birth, excitement turned to concern when keepers found the tiny bat on the floor of the habitat, apparently rejected by her mom.
"Rods are big and fuzzy, and most of the time they keep their babies tucked up underneath a wing," said Laura Weiner, Senior Keeper for the zoo's Africa section. "When you see a baby on the ground, that's not a good sign."
The pup, which weighed less than 2 ounces, felt cold to the touch. Keepers scooped her up and rushed her to the zoo's veterinary medical center, where she was warmed, given fluids and determined to be in good health.
After several attempts to reunite the pup with her mother were met with rejection, the baby was returned to the vet hospital, where animal-care staff worked in shifts to administer formula feedings. She's out of ICU now, but she'll remain behind the scenes, until fall, during a long hand-rearing process that currently involves nine bottle feedings a day.
Weiner says the tiny survivor is not only "adorable," but a testament to one of the most inspiring conservation stories in history: living proof of the impact people can have, both positive and negative, on wildlife and species conservation.
"Every birth is significant for these bats," Weiner said. "Forty years ago, the Rodrigues Flying Fox was perilously close to extinction. The fact that they are here today shows what a difference people can make in helping wildlife."
The species is native only to Rodrigues, a tiny island in the Indian Ocean about 900 miles east of Madagascar, and plays an important ecological role on the island, where few other pollinators or seed dispersers exist. By the 1970s, much of this fruit bats' forest habitat had been cleared, and the species was on the brink extinction. After a cyclone hit the island in 1979, only 70 individuals remained, making the Rodrigues Flying Fox (Pteropus rodricensis) the most rare bat in the world.
The bats found a champion in English naturalist, Gerald Durrell, who translocated some survivors to form the nucleus of a breeding colony aimed at repopulating the species.
Although the Rodrigues Flying Fox is currently classified as “Critically Endangered” by the IUCN, the population has now increased to around 20,000, thanks to 40 years of conservation activity, including the Rodrigues Environmental Educator Project launched by the Philadelphia Zoo in 1998.
The Oregon Zoo began housing "Rods" in 1994, and has raised more than 40 pups since then, periodically sending bats to other zoos as part of the Rodrigues Flying Fox Species Survival Plan. (SSPs are Association of Zoos and Aquariums programs to ensure species that are threatened or endangered in the wild have sustainable populations in zoos and aquariums).