Duck-notes finalized

[BrassHerbologist]

• [ ] spawns in swamps, rivers, or anywhere with water nearby
• [ ] same drops as a chicken since duck meat would be content bloat
• [ ] has a duck hurt noise and no other custom sounds
• [ ] very fast on water, they will aim for lakes and rivers to swim away
• [ ] ducks are passive until in a group of 4 or more at which they become neutral
• [ ] throwing bread or seeds on the ground will make ducks swarm to eat it
• [ ] if no water around they will fly away to the nearest water
• [ ] if no water within render distance, they fly away until out of sight and then wander again
• [ ] ducks that have eaten will breed and spawn 1-4 ducklings
• [ ] duckling custom texture will be done at a later date, using parent texture for now
• [ ] drops: feathers/raw chicken

Biomes is_swamp is_river is_jungle -no cold/desert/forest/mountain