It’s difficult to say if the Oregon Zoo has a better or worse track record than other zoos on animal mortality. Since 1994, zoos and aquariums haven’t been required to inform the U.S. Department of Agriculture when their animals die.Here's Middaugh's message:
Six cotton-top tamarins - a species of small New World monkey - died of unknown causes this weekend while in quarantine at the Oregon Zoo's veterinary medical center. The six deceased belonged to a group of nine tamarins that arrived at the zoo May 22. The remaining three, including a 5-week-old baby, appear to be in good health and are being closely monitored. The deaths were discovered by vet staff early Sunday morning. Initial necropsy results were inconclusive, and tissue samples have been submitted to a pathologist for analysis. Zoo officials hope to receive the results within a few weeks.