Wow! Thank you so much for all these tips! So far, BYC has helped me with raising my geese and ducks, so I decided to join your company and get some help too... It is the only forum that includes everything so thank you all for that!
I will do as you say with olive oil and I will hope for the best. There was a round tiny clip that held my silver chain together, really small, but my cute curious Ms goose, playful as always, grabbed it from my neck before I even noticed. I was fast enough to grab the chain away from her beautiful beak I think generally speaking. Fiuf!!! After giving her bread completely soaked in olive oil (thank God she is the easiest animal to handle, big enough and loves to eat :-D) I'll keep waiting to see reactions the following days. I wish nothing weird occurs. I will keep you posted! Thank you loads!!!