According to a spokesperson for the zoo, about 300 cars are not driveable due to the hail that fell - some reaching up to 4 inches in diameter (about the size of a softball).
The Cheyenne Mountain Zoo in Colorado Springs said that "two of our animals have passed away due to trauma sustained during the hail storm". Cape vulture numbers have declined as much as 90 per cent in three generations, vulture conservation group VulPro said a year ago.
Buses were taking people from the zoo to the high school and as of 5:45 p.m. about three busloads of people remained at the zoo waiting for evacuation.
There were about 3,400 guests at the Cheyenne Mountain Zoo Monday afternoon. About 16 other animals were injured in the storm.
A busy USA zoo has been closed as officials assessed damage from a severe hail storm that sent five people to the hospital and killed two zoo birds.
Most of the approximately 280 cars in the zoo's parking lots were pummeled by hail and had their windshields smashed.
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A zoo in southern Colorado will be closed Tuesday so crews can fix damage from a powerful hailstorm that injured at least eight people. "Five guests were taken to the hospital with hail-related injuries", the zoo's post read. Two of the animals were killed and staff members are still searching for a Meerkat that may be missing, but they are sure it is hiding.
The storm knocked out power to almost 2000 customers.
The storm knocked out power to almost 2,000 customers in the area, and heavy rain and debris forced the closure of US Highway 24 west of Manitou Springs, the Colorado Springs Gazette reported.
The Broadmoor Hotel and resort also was pounded by hail.
Authorities say at least eight people were hospitalized after being hit by large hail at a zoo in southern Colorado.
Several children who were attending the zoo camp on Monday weren't hurt, according to a tweet from the Fire Department.