The World Owl Trust say their current agreement with the estate managers is being terminated and unless they can negotiate new arrangements, they'll have to leave by May 2015.
The charity claims the new terms are not financially viable, but the estate say negotiations are ongoing and in tough financial times it's having to review the way the owl centre is run.
The Muncaster estate says it's willing to negotiate but the Trust says it's looking for new premises. Honorary President Tony Warbuton said: "the owl trust is looking for somewhere new to be based, we do not feel we are wanted anymore at Muncaster."
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Kerrie brings you Sunday night's forecast
The highest risk of snow is from the NW later on Monday into Tuesday. For all it will remain cold with raw days and frosty, icy nights
Wintry start for some and windy. Brightening later