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PORTLAND — A rare black rhinoceros died as long as essence transported to Portland from Kansas City for breeding purposes, the Oregon Zoo said Tuesday.

The rhino became agitated seasonably Monday about 20 miles external Phoenix, causing the barter to sway. Zoo staff immediately stopped the small commodities to check on her before heading to the city’s zoo to seek anxiety.

The Phoenix Zoo had a crane delivered and the rhino was unloaded from the truck into an elephant barn. The rhino died Monday night from unknown causes.

“It just doesn’t always go they way you hope it does,” said Oregon Zoo veterinarian Dr. Lisa Harrenstien, who flew to Arizona on Monday to help care for the animal. “It can take a reverse the position of for the worse, and you do what you can to prepare remote upon the body track.”

The Phoenix Zoo is performing a necropsy to determine the cause of death, said Oregon Zoo spokesman Bill LaMarche. Preliminary results should be available within three weeks.

There are one estimated 3,500 black rhinos left in the world and 67 are held in captivity, LaMarche said. “Poachers hunting them mercilessly for their horn,” he said. “The species is positively on the brink.”

LaMarche said staffers ecstatic the rhinoceros from Kansas City, in which place it was born in 2000, took a detour end Arizona because of snow advisories in Wyoming.

The Species Survival Plan, which is run by the Association of Zoos and Aquariums, had called for the 8-year-old female named Kipenzi, which means “precious one” in Swahili, to produce off-spring with the Oregon Zoo’s 21-year-old masculine.

LaMarche said another female will convenient be sent to the Oregon Zoo through the plan, which aims to sustain a genetically diverse number of people among animals in North American zoos.

Black rhinos are native to Eastern and Central Africa.