Staff at Banham Zoo in Norfolk are celebrating the arrival of twin tiger cubs.
Keepers installed CCTV cameras so that they could monitor their Amur tigress, Sveta, giving birth without disturbing her.
The twins are said to be making excellent progress.
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Early fog will clear to leave a dry day with sunny spells and highs of 18 deg C (64 deg F)
Overnight there'll be mist and fog but it will clear for Sunday leaving sunny spells.
A month of special events for the Norfolk nurse responsible for saving Allied soldiers in the First World war, has begun.