I have 5 ducks that i bought at a local feed store. Four Males and One Female. they are about 6 months old now and I LOVE them. I am trying to learn their language and there no books that help with this. example: -when they are in the water sometimes one male will tuck their bill down/bob and make this almost burping sound. It's a quick simultaneous act (tuck/bob/grunt) -I will be petting the female, while she appears calm and out of the blue she will quickly lunge her bill at me and glide it across my arm A problem I am having with one of the males is he keeps trying to rape the female outside of the water repeatedly. it has caused a problem because the only way I think I can resolve it is to separate her but they are very attached to each other. The females neck is a mess from him grabbing her but she keeps putting herself in his path. please advice..