I have 4 one month old ducklings and 2 1 week old ducklings and my one month olds are trying to attack the little ones. I have attempted to introduce slowly but my older ones aren't having it. i have them seperated and after their play time in the tub I let them run through the kitchen and my big are trying to pound on the little one heads with their neck or step on them. What to do??? Any help is greatly appreciated!