Mystery Bird Appears In Home Movie

In this video, which hasn't survived the passage of time well, a mystery bird is spotted that some liken to a crane (and with its trailing legs, I might agree). However, I note that it seems...stiff. My first thought was actually a kite flying by in the background. I don't know why really it is being presented as a cryptid mystery. I think there could be countless explanations.

A poster on another thread thought it might be an Alp, a mythical creature of Germanic legend.