While the children were wrong, your sister was even more at fault for buying live animals for these children. This was not the store's fault or the hatchery's fault for having dyed live stock it was your sisters for not buying responsibly.
Its very sad. I have wanted chickens for years, and finally got my husband to agree and he built the coop back in Oct, I ordered my chicks in Nov and they were delieverd Feb 14. I love my almost 4 week old brats - they are so much fun to watch and play with, they jump right in my lap and sleep, or peck, or poop lol
Anyway - my sister came over the other day and wanted to see them, and she told me she bought chicks and ducks on a whim one easter for her step kids.. MONSTERS who are now in juvie or god knows where.. well, the lucky ducks eventually grew large enough to get in the creek behind the house and swim to safety, and the unlucky chicks and ducks that were not nimble enough to escape, had thier little heads pulled off by a horrid barbaric teenager girl who thought it was funny.
It makes me sick to my stomach to even think of that and all these poor babies being sold over easter who are going to be abused, misused and discarded.