Ok guys, strange question here but I have no idea whats going on. When I give treats to my ducks, il hold the treats in my hands, they come over to me and their heads are shaking. Then when they have finished eating out of my hand they do something really strange. Il try and explain. Imagine your hand is full of peas and your down offering them to the ducks, when the hand is empty and they have eaten them all, they sort of jump onto my arm, like there knecks go straight and the head ends up by elbow. Then they run off. They dont do this normally, like when im just sat chatting to them, its only after treats, they shake quit badly to. It concerns me because when I added the two younger ones to the two older ones, the older ones used to do this just before they attacked the little ones. I hope its a display of effection rather than anything else. They dont peck me, just sort of flop on my arm and run away. Its strange! They are females by the way, because I thought it could be a sort of "dog against the sofa" moment, if you know what I mean, but I guess this would only come from the males. Anyways, any ideas and opinions welcome! Many thanks in advance