This mod was created by myself as a request from my sister who wanted ducks in Minecraft, so that is exactly what I did.
It's a very simple mod, it only adds one mob (and few other hidden things) the duck. Ducks can be found naturally spawning in places near water i.e. The Beach, rivers and swamp biomes.
They behave almost the same as a Chicken does. the main difference being that Ducks will only drop a feather when killed rather than feathers and meat. Ducks also will not produce eggs.
So why add these ducks if they're just re-skinned Chickens? well why not, ducks are cute and a great addition to any cottage core builds or cosy ponds. It's also fun to hear they're adorable quack.
Also try putting an iron ingot and a carrot into a crafting table :)