I'm trying to find an interesting anime from my childhood. I don't know if this portion I've seen (I don't remember the whole thing) is from an animated film or series. I remember that the art style was reminiscent of Arupusu no sho-jo Haiji (アルプスの少女ハイジ) (informally known as Heidi, Girl of the Alps) and most Studio Ghibli films — its setting is in the country, as far as I can remember.
All I can remember is a small boy somehow flying on a goose (I don't remember whether the boy was small or the goose was giant) and eventually arriving to a house in which a creepy giant bearded man lived. Then, the boy discovered that the man doesn't have a reflection in the water, and that he is a ghost. That's all I can remember. I suspect that the series originated in the 90s.
Thank you for your answers.