Thankyou for your reply.
I have just feed the geese and my sick one took a few pieces of lettice leaf. I watched her closely and it seems swallowing is the problem, some did go down.
I will house her tonight with water and food and in the morning check her tongue and throat then speak to the local vet.
Thank you for your advise.
I have contacted my local vet and we have discussed your answer. She has given me some medication and food suppliments for the goose and we are in regular contact over progress. At worst if the goose dies she will organise a PM to establish a possible cause so we can try and protect the rest of the flock.
At present the goose is isolated in a clean pen with fresh water and has taken a few chick crums.
Many Thanks Stephen.