Ducks hate each other? Help!

[Decorum]

Recently I've raised a cute little Mallard that was abandoned by his mama. He's one month or so old now, and he seemed lonely, so I decided to get him two new companions! They're a couple of weeks younger than him, and he hates them. Whenever he's near them his head gets low to the ground and he starts shaking and trying to bite them. He's usually pretty cuddly, but if I separate them, he'll even bite me. Why is he doing this, and will this behavior last?

 

[Miss Lydia]

How precious. You need to set them up side by side so they can see each other but can’t get each other. It shouldn’t take long for things to settle down and they become friends. When trying to put them together put some dry meal worms around so they are eating instead of focusing on each other