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All 10,000 creatures at Bristol Zoo are being meticulously counted by keepers as part of its annual census.

Staff armed with clipboards began checking the number of residents across the 12-acre site on Friday morning.

The count of every animal, from ants to gorillas, usually takes most of the day to complete.

The animal stock-take is carried out at the start of each year to check numbers tally with zoo records and that vulnerable populations are thriving.

A zoo spokeswoman, said "some animals are easier to count than others", including the rare golden poison arrow frog - of which the zoo has four.

"These toxic amphibians are the most poisonous frogs in the world," she said.

"Just one individual contains sufficient toxin in its skin to kill at least 20 adults."

Along with a colony of leafcutter ants, the count also includes a flock of "noisy" black-cheeked lovebirds, she added.

In 2019, the 95-strong flock was boosted by the arrival of 30 chicks making it one of the biggest in Europe.

John Partridge, senior curator, said counting the animals was an "important task".

"It acts as an audit to check that our records are accurate," he said.

"We have precise information on individual animals and groups, which we share with colleagues around the world to help care for the animals."

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