Penguins are counted by a zoo keeper

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Zoo animal census

Zoo keeper Pippa Green counts members of a flock of penguins on Jan. 2 as part of the annual stocktake at Bristol Zoo in England.

Annual animal 'censuses' are carried out at the start of the year by the Bristol and London Zoos in England. Over the course of the stocktakes, the populations of hundreds of species are recorded; from tiny insects, fish and birds, to seals, gorillas and monkeys.

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Bullfrog covered in mud

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Handful of bullfrog

A large bullfrog covered in mud is held in the gloved hands of a zoo keeper on Jan. 3 during London Zoo's annual stocktake of animals.

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Zookeepr counts a meerkat

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Hakuna Matata

A meerkat inspects zoo keeper Sarah Hall on Jan. 2 as she counts the number of meerkats living at the Bristol Zoo.

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Insect is counted by a zoo keeper

Photo: Dan Kitwood/Getty Images

Sticky populations

A Jungle Nymph, a large member of the stick insect family, rests on a zookeeper's hand on Jan. 3 during London Zoo's annual stocktake of animals.

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