Burrowing owl named Ettie is weighed by keeper Anna Brink at the annual wei...

Burrowing owl named Ettie is weighed by keeper Anna Brink at the annual wei...

Burrowing owl named Ettie is weighed by keeper Anna Brink at the annual wei...

Redbilled hornbill Mali is weighed by keeper Anna Brink at the annual weigh...

Redbilled hornbill Mali is weighed by keeper Anna Brink at the annual weigh...

Redbilled hornbill Mali is weighed by keeper Anna Brink at the annual weigh...

Redbilled hornbill Mali is weighed by keeper Anna Brink at the annual weigh...

Redbilled hornbill Mali is weighed by keeper Anna Brink at the annual weigh...

Redbilled hornbill Mali is weighed by keeper Anna Brink at the annual weigh...

European Brown Bears are measured during the annual weigh in at ZSL Whipsna...

European Brown Bears are measured during the annual weigh in at ZSL Whipsna...

European Brown Bears are measured during the annual weigh in at ZSL Whipsna...

Bongo named Pembe is weighed by keepers Adam Davidson and Helen Rawson at t...

Bongo named Pembe is weighed by keepers Adam Davidson and Helen Rawson at t...

Reticulated giraffes are measured at the annual weigh in at ZSL Whipsnade Z...

An aardvark named Doby is weighed by keeper Olly Bosher at the annual weigh...

An aardvark named Doby is weighed by keeper Olly Bosher at the annual weigh...

An aardvark named Doby is weighed by keeper Olly Bosher at the annual weigh...